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NJRCAudioICs_EVC others7-05

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NJRCAudioICs_EVC others7-05 Powered By Docstoc
					Products Presentation
                      2005 Summer
                   Audio IC.
July, 2005
STANDARD IC Div.
Marketing Dept. SECTION 1
MASAHIKO INAGAKI

                                    1
 Audio IC
- Electronic Volume Products
     - Strength of NJRC’s Electronic Volume
     - For AV Amplifier
     - For DVD recorder
     - For Mini Component
     - For Car Audio
     - For General
- Audio Amplifier Products
     - Headphone Amplifier with Electronic Volume
     - Boost Amplifier for Car Audio
- Others
     - Band Pass Filters for Spectrum Analyzer
     - Audio Limiter
                                                    2
Electronic Volume
    Products




                    3
Strength of NJRC’s Electronic Volume

      - Feature -                  -Wide Line up-
   Low noise
       -114dBV typ.         Simple 2 channel Volume to
   Low distortion          Multifunction 8 channel Volume
       0.0008% typ.
                (NJW1196)   Line up for each application

                             < Home Theater / AV Amplifier / Mini-Compo. >

       - NEWS -
   Line up for
    0.5dB step series        < DVD/HDD Recorder >          < Car Audio >




                                                                             4
Electronic Volume
 for AV Amplifier
-Resistor Ladder Type-



                         5
Electronic Volume IC                                          ( & Selector IC)   Function Segmentation Map
           Ladder Type Electronic Volume & Selector IC for AV Amplifier
                                   For 2ch / Multi-ch Audio                                                      For AV Amplifier
                                                 0.5dBstep                                          0.5dBstep            0.5dBstep
                                          NJW1194                                            NJW119X              NJW1197
            Tone &
              Sel.




                                                                                             NJW1153             NJW1157B
                                                                                                     0.5dBstep
                                                                                            NJW11XX
             Tone




                                                                                            NJW1150/51
Function




                                                                                                                          0.5dBstep
                                                                                                                  NJW11XX
            Sel.




                                                  0.5dBstep                                         0.5dBstep
                                          NJW11XX
             Vol. Only Sel. Only




                                                                                            NJW11XX

                                          NJW1159

                                          NJWXXXX             9in 3out Selector
                                            Series

                                           2ch                        4ch                     6ch                    8ch
                                                                                  Channel                                             6
Application Example 1 EVR                                                                                     ( AV
Amp. )
                 NJW1153 / NJW119X                                    6ch EVR with Input Selector
                                                                     Volume Tone Control     Buffer Amp.

      DVD
              Dolby Digital
                Decoder         2ch input
                                                                                            (Variable Gain)
                                                                                                               7.1ch
                                   Sel.
                       2ch
      Tuner

                       2ch                      6ch
       CD

                       2ch                      2ch
       MD                                           6ch
      AUX0
                       2ch

      AUX1             2ch
                                              2ch
                                            Input
                                             ATT



                              Rec Out          DSP
                                                           NJW1194 2ch EVR with Tone & Input Selector
                                                                2ch input Sel.     Volume Tone Control

Tone Control for                                          2ch
the Others beside Front Channel                       2ch

  Selectable 4-Chip Address                                             Buffer Amp.
                                                                       (Variable Gain)
   two-channel stereo to eight-channel

                                                                                                                       7
Application Example 2 EVR                                                                                         ( AV

Amp. )
                NJW1157B / NJW1197                                    8ch EVR with Input Selector                 Room 1
                                                                 Volume Tone Control       Buffer Amp.

  DVD
          Dolby Digital
            Decoder         2ch input
                                                                                          (Variable Gain)
                                                                                                                  7.1ch
                               Sel.                                                                          Ex). Living Room
                   2ch
  Tuner

                   2ch                      8ch
  CD

                   2ch                      2ch
  MD                                            8ch
  AUX0
                   2ch

  AUX1             2ch
                                          2ch
  AUX2             2ch                  Input
                                         ATT
  AUX3             2ch

                          Rec Out          DSP        NJW1194 2ch EVR with Tone & Input Selector Room 2
                                                                                                                  Ex). Bed Room
                                                            2ch input Sel.       Volume Tone Control
                                                                                                            2ch
Tone Control for                                                                                                  Child’s Room

Room 2 (Sub. Room)                                    2ch

 Selectable 4-Chip Address                                          Buffer Amp.
                                                                    (Variable Gain)
  Room 2 to Room 5

                                                                                                                                  8
  P.6
                                                                                                                                        NJW1197
        8-Channel Electronic Volume with Input Selector
 GENERAL DESCRIPTION                                                                           PACKAGE OUTLINE
 The NJW1197 is a 8-Channel Electronic Volume
with Input Selector. It includes tone control,
Input/Output gain control, REC Output and Multi
channel inputs.
 The NJW1197 is suitable for multi-channel audio
system, such as AV amplifier, DVD receiver, and                                                                              NJW1197FC2
others.                                                                                         BLOCK DIAGRAM
 All of internal status and variables are controlled by




                                                                                                                                                                                                                            RECA4R



                                                                                                                                                                                                                                              RECB1R
                                                                                                                                                                      RECA1R



                                                                                                                                                                                        RECA2R




                                                                                                                                                                                                                   RECA4L



                                                                                                                                                                                                                                     RECB1L
                                                                                                                                                                               RECA2L



                                                                                                                                                                                                 RECA3L

                                                                                                                                                                                                          RECA3R
                                                                                                                                                             RECA1L
3-wired serial bus interface.
                                                                                                LAIN




                                                                       Multi-Channel Input A
                                                                                                RAIN
                                                                                                CAIN
                                                                                               LSAIN
                                                                                               RSAIN                                                                                                                                                               V+
                                                                                               LBAIN                                                                                                                                                   Supply
                                                                                                                                                                                                                                                                   GND
                                                                                               RBAIN                                                                                                                                                   Voltage
                                                                                               SWAIN                                                                                                                                                               V-
                                                                                                                                                                                                                                                                   LATCH
                                                                                                                                                                                                                                                        mCOM
 FEATURES                                                                                     L1IN
                                                                                                                                                                                                                                                       Interface   DATA
                                                                                                                                                                                                                                                                   CLOCK


  Operating Voltage         4.5 to  7.5V
                                                                                                                                                                                        Multi-channel                                                              MUTE
                                                                                               R1IN
                                                                                                                                                                                           Selector
                                                                                               L2IN                                                                                                                                                        SW
                                                                                                                                                                                                               TONE                                                LOUT
  3-wired Serial BUS Control
                                                                                                                                                              Volume
                                                                                               R2IN
                                                                                                                                                                                                                                                   TSW
                                                                                               L3IN

  Input selector (2ch  11, 7.1ch  2)                                                        R3IN
                                                                                               L4IN
                                                                                                                                                                                                               TONE                                        SW
                                                                                                                                                                                                                                                                   ROUT


  REC Output (2ch  5) Independent Mute function                                              R4IN
                                                                                               L5IN
                                                                                                                                                                                                                                                                   COUT

  Input Gain Control        0/-3/-6/-9/-12dB                                                  R5IN


                                                                            2 Channel Input
                                                                                               L6IN                                                                                                                                                                LSOUT
  Output Gain Control                                                                         R6IN

                                                                                               L7IN
                                                                                                                                                                                                                                                                   RSOUT
        Gain : 0/+12/+13/+14/+15/+16/+17/+18dB (L,R,C,LS,RS,LB,RBch)                           R7IN
                                                                                               L8IN
        Gain : 0/+22/+23/+24/+25/+26/+27/+28dB (SWch)                                          R8IN                                                                                                                                                                LBOUT
                                                                                               L9IN
        Independent Control: L,Rch / Cch / LS,RSch / LB,RBch / SWch                            R9IN
                                                                                                                                                                                                                                                                   RBOUT
  Volume                 0 ~ -100dB/0.5dBstep, MUTE
                                                                                               L10IN
                                                                                               R10IN                                                                                                                                 BSW
                                                                                                                                                                                                                                                       SSW
  Tone Control (Bass,Treble) for L,R-ch
                                                                                               L11IN                                                                                                                                                               SWOUT
                                                                                               R11IN


  Bi-CMOS Technology                                                                                                                                                   Volume
                                                                                                                                                                      Output Gain




                                                                                                                                                   LSBIN

                                                                                                                                                   LBBIN
                                                                                                                                                   RBBIN

                                                                                                                                                   RBBIN
                                                                                                                                     FL-




                                                                                                                                                   RBIN
                                                                                                                                           RBCIN
                                                                                                                                           LSCIN




                                                                                                                                                   SWBIN
                                                                                                                                     FR-


                                                                                                                                           RSCIN
                                                                                                                                           LBCIN
                                                                                                                                     FL+

                                                                                                                                     FR+




                                                                                                                                                   LBIN

                                                                                                                                                   CBIN




                                                                                                                                                                                                                                        FIL3_R
                                                                                                                                                                                                                                        FIL2_R
                                                                                                                                                                                                                                        FIL1_R
                                                                                                                                                                                                                   FIL3_L
                                                                                                                                                                                                                   FIL2_L
                                                                                                                                                                                                                   FIL1_L
  Package Outline        QFP100
                                                                                                 Input Selector   REC Out Selector
                                                                                                                                     Multi-Channel Input B




                                                                                                                                                                                                                                                                           9
    P.8
                                                                                      NJW1194
2-Channel Electronic Volume with Input Selector, Tone Control
   GENERAL DESCRIPTION
                                                                          PACKAGE OUTLINE
   The NJW1194 is a 2-channel electronic volume with
  4-in 1-out stereo audio selector and Tone Control.
    The NJW1194 performs low noise and low distortion
  characteristics with resistance ladder circuit.
   All of functions are controlled via three-wired serial                         NJW1194V
  bus. Selectable 4-Chip address is available for using
  four chips on same serial bus line.                                     BLOCK DIAGRAM
   It’s suitable for two-channel stereo system and or
  multi-channel audio system.                                                                                                     Ach Tone Filter




                                                                                                     CLOCK
                                                                                           LATCH




                                                                                                                    ADR1
                                                                                                                           ADR0
                                                                                                             DATA
                                                                                                                                                    V+ GND V-
   FEATURES
   Operating Voltage              4.5 to  7.5V
   3-wired Serial BUS Control                                   In A1

   Selectable 4-Chip Address                                    In A2                             Control Logic                                       Bias

                                                                 In A3
     Available for using four chips on same serial bus line      In A4

   Low Output Noise              -110dBV typ.                                                                                      TONE
                                                                                                                                                                Out A


   Low Distortion                0.001% typ. at Vin=2Vrms       In B1


   4in 1out Stereo Signal Selector                              In B2
                                                                 In B3
                                                                                                                                    TONE
                                                                                                                                                                OutB


   Volume                        0 to –100dB /0.5dBstep, MUTE   In B4

   Volume Output Gain            +18 to +6dB /2dBstep
   Tone Control                   0 to 10dB / 1dBstep
   Channel Separation            100dB typ.
   Bi-CMOS Technology
   Package Outline               SSOP32                                                                                          Bch Tone Filter




                                                                                                                                                                10
Electronic Volume
for DVD recorder
-Resistor Ladder Type-



                         11
Application Example                          NJW1196 ( DVD
recorder. )

   For Input Level Adjusting in DVD/HDD Recorder


          TV                TV          NJW1196
                           Tuner


                            BS                           A/D      Encoder
           BS              Tuner

                             CS
                           /CATV
       CS / CATV           Tuner



                                            DVD          HDD
          VCR


                         Low noise,               For double Tuner
                         Low Distortion            Selectable 2-Chip Address
          CAM
        (Front VCR)      Vno=-114dBV typ.
                         THD=0.0008% typ.
                                                                                12
 P.10
                                                                                                                                    NJW1196
        2-Channel Electronic Volume with Input Selector
 GENERAL DESCRIPTION                                            PACKAGE OUTLINE
  The NJW1196 is a 2-channel electronic volume with
6-in 1-out stereo audio selector.
   The NJW1196 performs low noise and low distortion
characteristics with resistance ladder circuit.
 It includes two reference voltage circuits for each                                                           NJW1196V
channel. They realizes very high channel separation.
  All of functions are controlled via I2C Bus. And the           BLOCK DIAGRAM
Slave Address selector is available for using two
chips on same serial bus line.
  It is suitable for input signal trimmer of audio               In B1                 In B2       In B3      In B4       In B5      In B6                                               Out B                                    V+
                                                                                                                                                                                                                                                SCL


equipments such as DVD/HDD recorder and VCR.                   10mF
                                                                  +
                                                                           10mF
                                                                              +
                                                                                      10mF
                                                                                         +
                                                                                                 10mF
                                                                                                    +
                                                                                                             10mF
                                                                                                                +
                                                                                                                        10mF
                                                                                                                           +
                                                                                                                                    10mF
                                                                                                                                       +
                                                                                                                                                                            10mF
                                                                                                                                                                               +
                                                                                                                                                                                        10mF
                                                                                                                                                                                           +                       +
                                                                                                                                                                                                                           10mF
                                                                                                                                                                                                                                         +
                                                                                                                                                                                                                                             100mF


                                                                      32      31         30             29      28             27          26    25        24          23          22      21               20         19          18           17

                                                                                                                                                GND

 FEATURES
 Operating Voltage           7.5 to 13V
                                                                                                                                                                VOL
                                                                                                                                                        0dB to -39.5dB                             Gain
                                                                                                                                                      / 0.5dBstep, Mute                            21dB to 0dB

I 2C Bus Interface            Slave Address select function                                                                                                                                        / 3dBstep


                                                                                                                                                                                                                                  50kW

 Low Output Noise            -114dBV typ.                                                                                                                                                VREF Amp.



 Low Distortion              0.0008% typ. at Vin=1Vrms
                                                                                                                                                                                          VREF Amp.                               50kW


                                                                                                                                                                                                   Gain

 6in 1out Stereo Signal Selector                                                                                                                               VOL
                                                                                                                                                        0dB to -39.5dB
                                                                                                                                                                                                   21dB to 0dB
                                                                                                                                                                                                    / 3dBstep


 Volume                       +21 to 0dB /3dBstep                                                                                                    / 0.5dBstep, Mute                                      VDD                    I2C
                                                                                                                                                                                                                                    Interface


                              0 to –39.5dB /0.5dBstep, MUTE                                                                                                      GND                                      DGND



 Channel Separation          110dB typ.
                                                                      1           2          3          4           5          6           7     8          9          10          11      12               13         14          15           16

                                                                      +           +          +          +           +          +           +                                       +           +                       +
                                                               10mF        10mF       10mF       10mF        10mF       10mF        10mF                                    10mF        10mF


 Input Resistance            130kW typ.
 Bi-CMOS Technology
                                                                  In A1                 In A2       In A3      In A4       In A5      In A6                                               Out A                                   ADR           SDA




 Package Outline             SSOP32


                                                                                                                                                                                                                                                      13
 Electronic Volume
for Mini-Component
 -Resistor Ladder Type-



                          14
Application Example                                                                                          NJW1190 ( Mini-Compo. )

Audio Processor with multi-purpose Surround Sound
       5 Input Selector
 Tuner, CD, Cassette, Aux1, Aux2
                                                                                                            Resistor Ladder type Volume
                                                                                                            Low Distortion 0.005% typ.
                                                                                                            Low Noise –100dBV typ.

                                                    MONa
                  IN1a
                  IN2a
                                    0 to 14dB 2dB
                  IN3a              step                                                                                                  OUTa
                                                                                                                                  VOL2
                  IN4a                                     VOL1                  TONE
                  IN5a                                                                                                                    SDA
                                                                                                                              I 2C Bus
                                                                                                            surround         Interf ace   SCL
                 MIC-IN    Mic-in 0,6,10,14dB
                                                                  TREBLE        MIDDLE        BASS
                                                                  -14 to 14dB   -14 to 14dB   -14 to 14dB                                 Vcc
                          Mute
                                                                  2dB step      2dB step      2dB step
                                                                                                            BassBoost          Bias       Vref
                  IN1b              0 to 14dB 2dB
                                    step                                                                                                  GND
                  IN2b
                  IN3b                                     VOL1                  TONE
                                                                                                                                 VOL2     OUTb
                  IN4b

                  IN5b
                                                    MONb




                                                                                                              Surround + Bass Boost
                                                                                                              10 effects
                                                                                                                ex. Hall, Disco, Church …
                                      Tone Control
                                  Bass, Middle, Treble

                                                                                                                                                 15
NJW1190
               多彩なサラウンドサウンドを提供します
               “NJW1190” reproduces a number of surround sounds.



     Bypass


     Classic           Jazz

      Rock            Movie                               ON

      Disco          Church

   Cathedral         Stadium
                                                      Classic Mode
  Mute
Mute-Cancel
                        前面スピーカーから音が出ています。
                          The sound comes from speakers on the wall.


                                                                       16
Electronic Volume
  for Car Audio
-Resistor Ladder Type-



                         17
Application Example                                                    NJW1192 ( Car Audio )

                                   Tone Control
 3 stereo & 1 monaural in                                               Vol1 : Mastering volume and Loudness
                                    ±14dB / 2dBstep
 1out Input Selector                                                    Vol2 : Balance and fader volume
Ex.) AM(monaural),
   FM, CD, AUX switches
                                                                                                 Line
                                                                                                 Output
                                                                                  Boost
                                                                                  Amplifier
                                                                                                 Line




                                                       I2C Interface
                                       Treble   Bass                                             Output
 Tuner
                   0, +6dB,
                   +12 dB, +18dB                                               NJM2792
 Tuner
                                                                                 Boost Output Function
                   0, +6dB,
                   +12 dB, +18dB
                                                                                 for Car Audio Line Output




                                                        Bias
 CD                                    Treble   Bass


                                                                                                          Lch    Rch
 AUX
                                                                                  Power
                                                                                  Amplifier


                                                                                                          SLch   SRch

                        4ch Electronic Volume with Loudness
                               Suitable for Car Audio

                                                                                                                 18
   P.12
                                                                                       NJW1192
  4-channel Electronic Volume with Input Selector
 GENERAL DESCRIPTION                                           PACKAGE OUTLINE
 NJW1192 is 4-channel electronic volume with input
selector. It includes master volume, balance control, fader,
Loudness, tone control, 3 stereo inputs and 1 monaural
input selector and loudness function.
 NJW1192 performs low noise and low distortion
characteristics with resistance ladder circuit.
 All of internal status and variables are controlled by I2C                        NJW1192V
BUS interface.
                                                                BLOCK DIAGRAM

 FEATURES
  Operating Voltage          7.5 to 13V
  I2C BUS Interface
  Low Output Noise           -103dBVtyp




                                                                                                       I2C Interface
  Low Distortion             0.005%typ                                                Treble   Bass

  3ch Stereo & 1ch Mono Input Selector                            0, +6dB,
                                                                   +12 dB, +18dB
  Loudness and Tone control
                                                       MONO
  Main Volume                                                     0, +6dB,
  Balance and Fader                                               +12 dB, +18dB

  Bi-CMOS Technology




                                                                                                        Bias
                                                                                       Treble   Bass

  Package Outline            SSOP32




                                                                                                                       19
   Electronic Volume
      for General
-Voltage Control Amplifier Type-



                                   20
Application Example 1                             NJW1184 ( General )


 External EVR of system IC without VOL function
               Ex. ) KARAOKE system




 Electronic Volume System by Volume function and Auxiliary port

                                                                   21
Application Example 2                          NJW1184 ( General )


    Eight channel volume




                 Selectable 2 Slave Address

                                                                22
  P.13
                                                                                   NJW1184
                            4-Channel Electronic Volume
 GENERAL DESCRIPTION                                          PACKAGE OUTLINE
 The NJW1184 is a four channel electronic volume.
The NJW1184 performs click-noiseless characteristics
with VCA circuit..
 These functions are controlled by I2C Bus. And the
Slave Address selector is available for using two                NJW1184V      NJW1184M         NJW1184D
chips on same serial bus line. It’s available for two-
channel stereo and or multi-channel audio volume.              BLOCK DIAGRAM



                                                               IN1          OUT1   IN3          OUT3
 FEATURES
 Operating Voltage           7.5to 13V                                                                            CVOL1

 I2C Bus Interface                                                                                                CVOL2
                                                                                                                   CVOL3
 Slave Address Selector      available for using two chips          VOL1                VOL3
                                                                                                                   CVOL4
                              on same serial bus line                                                   I2C Bus

 Volume (VCA type)           0 to –100dB/0.5dBstep, MUTE                                              Interface   AUX0
                                                                                                                   AUX1
 2 Auxiliary Port
                                                                                                                   ADR
 Bi-CMOS Technology
 Package Outline             SSOP20, DMP20, DIP20                                                                 SCL
                                                                     VOL2                VOL4                      SDA
                                                                                                                   V+
                                                                                                         Bias
                                                                                                                   GND


                                                               IN2          OUT2   IN4          OUT4    Vref




                                                                                                                           23
Audio Amplifier
  Products



                  24
 Headphone Amplifier
with Electronic Volume



                         25
  NJM2777 / NJW1109 Application
                     ex. NJW1149
                                          Class-D
DSP&D/A          Audio Processor           Amp.




  Mismatch in SPK and Hp-Amp Impedance.


                     ex. NJW1149
                                          Class-D
DSP&D/A          Audio Processor           Amp.


                  NJM2777 / NJW1109
                                                    Picture in
                    Headphone Amp.
                                                     Picture
                       with EVR

                                                                 26
    P.14          Headphone Amplifier with EVR
NJM2777            CNTa CAPa
                                                 NJW1109          CAPa   SDA SCL


                               Mute     Mute                                 I2 C     DGND
                                                                          Interface

                     VOL                                          VOL
           IN a                         OUTa              IN a                        OUTa


                     VOL                                          VOL
           IN b                         OUTb
                                                          IN b                        OUTb


                               Bias     Vref                              Bias        Vref


                  CNTb CAPb    V+ GND                             CAPb   V+ GND
                               Status : MP                               Status : MP

    Radio Cassette,CD(DVD)-R/W Slot,                C-TV,LCD-TV,DVD-Player,
    Mini Component, Audio Equip.                    AV receiver, I2C-Audio Equip.

 FEATURES                                          PACKAGE OUTLINE
  Power Supply Voltage         +8 to +10V
 Low Operating Current           5.0mA typ.
  EVR range                    +20 to -80dB
  Output Power                 100mW typ.
                               @RL=100W, V+=9V       NJW1109D    NJW1109M        NJW1109V

                                                                                         27
Boost Amplifier
 for Car Audio



                  28
Application Example                      NJM2792 (Car
Audio)

 + High-voltage output realizes High S/N Performance
     V+=9V
                   NJM2792                                                Vo=14Vpp
    NJW1192, etc
                               Line
                               Output
                   Boost                V+=9V
     EVR for Car
                   Amplifier
                               Line
                               Output




                                           Wide Frequency Responce
                   Power                        - 5Vrms typ. , at f=100kHz -
                   Amplifier




                                                                                 29
  P.16
                                                                                                                 NJM2792
               QUAD CAR AUDIO BOOST AMPLIFIER
 GENERAL DESCRIPTION                                              PACKAGE OUTLINE
   The NJM2792 is a quad boost amplifier designed for car
audio system. It expands the frequency characteristics by high
slew rate.
It can swing 14V peak-to-peak output voltage at 9V. It consists         NJM2792V
of four channel non-inverting amplifier with the gain of 8dB.
It is suitable for car audio system and other boost amplifier      BLOCK DIAGRAM
system.
                                                                                       GND                                                                        220mF
                                                                                          1                                                                   +
                                                                                                               Lift Amp                         CIN1
                                                                                                                                               20
                                                                                     COUT1                                                                            1.5nF
                                                                                          2
                                                                                                               36kΩ
 FEATURES                                                                    22mF FL OUT
                                                                                +       3
                                                                                                                                               RL OUT + mF
                                                                                                                                               19
                                                                                                                                                      22

                                                                                                                                                                  RL=10kΩ
                                                                    RL=10kΩ               33kΩ                 24kΩ                            33kΩ
  Operating Voltage                 6 to 12V                                             FB1
                                                                                             4                                                 18
                                                                                                                                                FB2
                                                                                                                                                        22kΩ
                                                                              22kΩ
  Operating Current                 16mA typ.                                  +
                                                                                          FL IN
                                                                                              5
                                                                                                  Signal Amp
                                                                                                               60kΩ        60kΩ
                                                                                                                                  Signal Amp
                                                                                                                                               RL IN
                                                                                                                                               17
                                                                                                                                                        +




  Roll off High Frequency           100kHz typ. , at Gv=-1dB
                                                                                10mF              Front-L                            Rear-L            10mF



  Maximum Output Voltage            5Vrms typ. , at f=100kHz                                                  44kΩ 24kΩ 46kΩ

  Boost Output Function             Vo=14Vpp, at V+=9V                                   REF
                                                                                            6
                                                                                                                                                V+
                                                                                                                                               16
                                                                                                                                                         100nF
  Supply Voltage Rejection Ratio    50dB typ.
                                                                                      +
                                                                              47mF
                                                                                                               44kΩ 24kΩ 46kΩ

  Low Total Harmonic Distortion     0.003% typ.
  Low Noise Output Voltage          5mVrms typ.                               10mF FR IN
                                                                                +
                                                                                        7
                                                                                                  Front-R      60kΩ        60kΩ      Rear-R    RR IN 10mF
                                                                                                                                               15
                                                                                                                                                       +




  Bipolar Technology
                                                                                                  Signal Amp                      Signal Amp
                                                                              22kΩ                                                                      22kΩ
                                                                                          FB3                                                   FB4
                                                                                            8                                                  14

  Package Outline                   SSOP20                         RL=10kΩ
                                                                                    9
                                                                                          33kΩ
                                                                                                               24kΩ
                                                                                                                                               33kΩ
                                                                                                                                               13
                                                                                                                                                        +
                                                                                                                                                                  RL=10kΩ
                                                                             +
                                                                          22mF FR OUT                          36kΩ                            RR OUT 22mF
                                                                                         10
                                                                                     COUT2                                                      CIN2              1.5nF
                                                                                                                                               12
                                                                                                                Lift Amp                                          +

                                                                                                                                                GND                   220mF
                                                                                                                                               11




                                                                                                                                                                              30
Others




         31
Audio Limiter



                32
       Application Example                                 NJM2761
                                                           Clipped output waveform
Excessive input signal
                               in conventional System
                                  without NJM2761




                               Apply the NJM2761           Optimized signal level
                                                             without clipping

                         LIN     ATT                LOUT




                         RIN     ATT                ROUT




                                                                                     33
  P.17
                                                                             NJM2761
                                        Audio Limiter
 GENERAL DESCRIPTION                                               PACKAGE OUTLINE
  The NJM2761 is the audio limiter for speaker protection.
It includes input level detector and attenuator for volume
control at excessive input signal. The limit level is adjustable
by external resistor.                                                      NJM2761RB2
  It is suitable for audio equipments processing wide
dynamic range signal or using small speakers with narrow
                                                                    BLOCK DIAGRAM
dynamic range.
                                                                                         Vcc


 FEATURES
  Operating Voltage              2.7 to 13V                                                       Vref

  Limit Level                    0.2 to 1Vrms
  Output Noise                   -90dBV                             INa                           OUTa

  Bipolar Technology
  Package Outline                TVSP10
                                                                     INb                           OUTb




                                                                                                   SW


                                                                                   INT     SENSE




                                                                                                          34
  Band Pass Filters
for Spectrum Analyzer



                        35
Application Example                      NJM2760

                        Power Amp

   EVR


                                    mC
         V+
                 BPF4   DE T




                 BPF3   DE T




                               A/D
                 BPF2   DE T




                 BPF1   DE T
                                         VFD/LCD
         GND
                        DE T
                                          Driver


               NJM2760


                                                   36
  P.18
                                                                                   NJM2760
    Band Pass Filters for Spectrum Analyzer
 GENERAL DESCRIPTION                                          PACKAGE OUTLINE
 The NJM2760 is a Band Pass Filters for Spectrum
Analyzer.
 It includes 4-band BPF amplifier, 4-band detector and
recording level indicator output.
 It works perfectly with 3.3V operated micro controller.                      NJM2760V
 It is suitable for level meter of audio components.
                                                               BLOCK DIAGRAM
                                                                                         5.6kΩ          10kΩ   6.8kΩ

 FEATURES
  Operating Voltage            2.7 to 9V                                                        22nF      47nF    4.7nF


  4-BPF + Detector
  Recording Level Indicator                                                      V+                      BPF              DET         BPF4 out

  Low Offset Voltage           5mV typ.
                                                                      1μF
                                                                                                                                 1μF


  Adjustable Input Sensitivity                                                                           BPF              DET         BPF3 out

  Bipolar Technology                                             200kΩ
                                                                                                                                 1μF


  Package Outline              SSOP20                     L in
                                                                  200kΩ     1μF
                                                                                                          BPF              DET         BPF2 out
                                                           R in                                                                  1μF


                                                                                                          BPF              DET         BPF1 out
                                                                                                                                 1μF

                                                                  200kΩ
                                                                  200kΩ                                                    DET         REC out
                                                                            1μF
                                                                                                                                 1μF
                                                                                       GND

                                                                                                          470pF




                                                                                                                                       37
38

				
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posted:10/20/2011
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