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UTC2025 LINEAR INTEGRATED CIRCUIT

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UTC2025 LINEAR INTEGRATED CIRCUIT Powered By Docstoc
					UTC2025                                                   NEAR I
                                                         LI               RCUI
                                                               NTEGRATED CI  T
STEREO AUDIO AMPLIFIER

DESCRIPTION
 The UTC2025 is a monolithic integrated audio amplifier in a
16-pin plastic dual in line package. It is designed for
portable cassette players and radios.



FEATURES
*Working Voltage down to 3V
*Few External components
*High Channel isolation
*Voltage gain up to 45dB(Adjustable with external
   resistor)
*Soft clipping
*Internal Thermal protection
                                                                                                        DIP-16




BLOCK DIAGRAM

                         9       10    11           12             13   14                   15

                                            50
                                                             10k
                       THERMAL
                       PROTECT



                        START
                       CIRCUIT
                                                                                        5k
                 8                                        DECOUPLING                              16

                                                                                        50
                 7
                                                                                                  1


                                                            10k


                                            50



                                        6           5              4    3           2




ABSOLUTE MAXIMUM RATINGS
        Characteristic                           Symbol                     Value                      Unit
Supply Voltage                                     VS                       15                          V
Output Peak Current                                IO                      1.5                          A
Junction Temperature                               Tj                      150                          °
Storage Temperature                               Tstg                  -40+150                        °




                            CS  LTD
           YOUW ANG ELECTRONI CO.                                                                             1
UTC2025                                              NEAR I
                                                    LI               RCUI
                                                          NTEGRATED CI  T

ELECTRICAL CHARACTERISTICS
(Tamb=25°,VCC=9V,Stereo,Unless otherwise specified)
        Parameter             Symbol           Test conditions      Min   Typ   Max   Unit
Supply Voltage                         VS                            3          12    V
Quiescent Current                      IQ                                 40    50    mA
Quiescent output voltage               VO                                 4.5         V
Voltage gain                           AV      Stereo               43    45    47    dB
                                               Bridge               49    51    53
Voltage gain difference                ∆AV                                      ±1    dB
Input impedance                         Ri                                30          kΩ
                                               f=1kHz;d=10%
                                               Stereo per channel
                                               VCC=9V;RL=4Ω         1.7   2.3
                                                        RL=8Ω             1.3
                                               VCC=6V;RL=4Ω         0.7    1
                                                        RL=8Ω             0.6          W
Output Power                           PO      VCC=3V;RL=4Ω               0.1
                                               Bridge                     4.7
                                               VCC=9V;RL=8Ω
                                               VCC=6V;RL=4Ω               2.8
                                               VCC=9V;RL=4Ω
Distortion                              d      f=1kHz;PO=250mW
                                                         Stereo      -    0.3   1.5    %
                                                         Bridge      -    0.5    -
                                               RG=0;AV=45dB
Supply voltage Rejection              SVR      Vripple=150mVRMS     40    46     -    dB
                                               Fripple=100Hz
                                               AV=200
                                               Bandwidth:
Input noise Voltage                    Vn      20Hz to 20kHz
                                               RG=0                  -    1.5    3    µV
                                               RG=10kΩ               -     3     6
Cross-Talk                            C.T.     RG=10kΩ;             40    55     -    dB
                                               f=1kHz;RL=4Ω
                                               PO=1W

THERMAL RESISTANCE
Rth(j-c):Junction to case thermal resistance 15° /W
Rth(j-a):Junction to ambient thermal resistance 60° /w




                              CS  LTD
             YOUW ANG ELECTRONI CO.                                                    2
UTC2025                                                                               NEAR I
                                                                                     LI               RCUI
                                                                                           NTEGRATED CI  T
PIN CONNECTION




                                                                                                              FEEDBAC




                                                                                                                                             GND (sub
                                                                                     BOOT.1




                                                                                                                              IN.1 (+)
                                                                       OUT.1




                                                                                              GND


                                                                                                    GND
                                                           +Vs
                                                           16


                                                                       15


                                                                                     14


                                                                                              13


                                                                                                    12


                                                                                                              11


                                                                                                                              10


                                                                                                                                             9
                                                           1


                                                                       2


                                                                                     3


                                                                                              4


                                                                                                    5


                                                                                                              6


                                                                                                                              7


                                                                                                                                             8
                                                                                                              EEDBACK
                                                           BRIDGE


                                                                       OUT.2


                                                                                     BOOT.2




                                                                                                                              IN.2 (+)
                                                                                              GND


                                                                                                    GND




                                                                                                                                             SVR
TYPICAL PERFORMANCE CHARACTERISTICS

         d(%)              Distortion versus output power                                           d(%)                          Distortion versus output power
        10                                                                                          1




                                                                                                                                                        Vcc=6V
                                                                                                                                                        RL=8


                    Vcc=6V
                    RL=40

        1                                                                                           0.1




              0    0.2         0.4    0.6      0.8           1.0               1.2                        0             0.2                  0.4             0.6   0.8        1.0             1.2
                                                                           P0(W)                                                                                                             P0(W)




                     Distortion versus output Frequency                                                                 Output power/versus supply voltage

                                                                                                     8
        10
        d(%)                                                                                   Po(W)



                                                                                                     6

                          Vcc=9V
                          RL=9
                          Po=1.5W                                                                                                                 f=1kHz
                                                                                                                                                  d=10%
                                                                                                                                                  RL=4
        1                                                                                            4




                                                                                                     2




        0.1                                                                                          0
              10         100          1k             10k            f(Hz) 100k                            0                              4                   8           12         Vcc(V)




                       CS  LTD
      YOUW ANG ELECTRONI CO.                                                                                                                                                                         3
UTC2025                                                         NEAR I
                                                               LI               RCUI
                                                                     NTEGRATED CI  T

APPLICATION CIRCUITS

        Vcc       100µF                                                            Vcc          100µF


         0.22µF                              100µF                                     0.22µF                              100µF
                                16                                                                          16
                    10                  14                                                        10                  14               470µF
  Vin                                                                      Vin 1                                                               OUT1
          100µF     11                  15                                             100µF      11                  15
                                             0.15µF                                                                        0.15µF
                                                                                                                                                RL

                    7                                     RL                           0.22µF
                                             100µF                                                7                        100µF
                    5                   3                                  Vin 2                                      3                470µF
         100µF                                                                         100µF      5                                            OUT2
                                        2                                                                             2
                                             0.15µF                                                                        0.15µF
                    1                                                                                                                           RL
                    8     4,5,9,12,13                                                             8     4,5,9,12,13
         100µF                                                                      100µF




        Fig. 5 Bridge Application                                              Fig.6 Stereo Application



SCHEMATIC DIAGRAM
                                                          I2+                            I2-
                            8                         7                            6
                                                                                                                                 +Vs
                                                                                                                            16


                                                                                                                            3




                                                                                                                                 OUT 2
                                                                                                                            2




           GND
              9                                                                                                             4

                                                                                                                            5

                                                                I1+                I1-
                                                                      10      11

                                                                                                                            14

                                                                                                                                 OUT 1
                                                                                                                            15

                                                                                                                            12

              1                                                                                                             13




                           CS  LTD
          YOUW ANG ELECTRONI CO.                                                                                                                4

				
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