PowerPoint Presentation by WOpK104


									Introduction to

  Zhou Lingling

   SJTU Zhou Lingling   1

• Organization of this textbook
• Objective of this course
• Basic concepts

                  SJTU Zhou Lingling   2
         Organization of This Textbook

•   Part --- Devices and Basic Circuits
•   Part --- Analogy and Digital ICs
•   Part  --- Selected Topics
•   Appendix

                   SJTU Zhou Lingling      3
       Part --- Devices and Basic

• Diodes
• MOS Field-Effect Transistors
• Bipolar Junction Transistors

                 SJTU Zhou Lingling   4
         Part --- Analogy and Digital ICs

•   Single-Stage IC Amplifiers
•   Differential and Multistage Amplifiers
•   Feedback
•   Operational-Amplifier

                   SJTU Zhou Lingling        5
      Part  --- Selected Topics

• Filters and Tuned Amplifiers
• Signal Generators and Waveform-Shaping
• Out-put Stages and Power Amplifiers

                SJTU Zhou Lingling         6

•   VLSI Fabrication Technology
•   Two-Port Network Parameters
•   Some Useful Network Theorems
•   Single-Time-Constant Circuits
•   S-domain Analysis: Poles, Zeros, and Bode

                   SJTU Zhou Lingling           7
       Objective of This Course

• To develop the ability to analyze and design
  electronic circuits,both analog and digital,
  discrete and integrated.
• Emphases is placed on transistor circuits
• As the fundamental of the IC design.

                  SJTU Zhou Lingling         8
       Basic concepts

• Basic concepts

                   SJTU Zhou Lingling   9

• Signal source
  Transducers are the devices which can convert the
  non-electric signal to electric signal, or vice versa.
  Signal source is the transducer witch can produce
  electric signal.
• Representation of the signal source
    Thévenin form
    Norton form

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Representation of the Signal Source

Two alternative representations of a signal source:
(a) the Thévenin form
(b) the Norton form

                SJTU Zhou Lingling                    11
Time-Domain Representation of

An arbitrary voltage signal vs(t).

                 SJTU Zhou Lingling   12
        Time-Domain Representation of

Sine-wave voltage signal of amplitude Va and frequency f = 1/T Hz.
The angular frequency ω = 2πf rad/s.

                         SJTU Zhou Lingling                          13
     Time-Domain Representation of

A symmetrical square-wave signal of amplitude V.

                      SJTU Zhou Lingling           14
            Frequency-Domain Representation
            of Signal

The frequency spectrum of an arbitrary waveform is continuous function
of frequency. It means the spectrum contains all possible frequencies.

                             SJTU Zhou Lingling                          15
         Frequency-Domain Representation
         of Signal

The frequency spectrum of the periodic square wave consists of
discrete frequencies.

                          SJTU Zhou Lingling                     16
         Analog and Digital Signals

• Analog signal
 The magnitude of analog signal can take on any value and
 exhibits a continuous variation over its range of activity.
• Digital signal
  The representation of digital signal is that of a sequence of
  numbers, each number representing the signal magnitude
  at an instant of time.
• Sampling
• ADC and DAC
                        SJTU Zhou Lingling                     17

Sampling the continuous-time analog signal in (a)
Results in the discrete-time signal in (b).

                   SJTU Zhou Lingling               18
            ADC and DAC

Block-diagram representation of the analog-to-digital converter (ADC).

                             SJTU Zhou Lingling                          19

                             A voltage
                             amplifier fed with
                             a signal vI(t) and
                             connected to a
                             load resistance RL.

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                             characteristic of a
                             linear voltage amplifier
                             with voltage gain Av.
                             The straight line
                             means the amplifier is
                             a linear amplifier.

        SJTU Zhou Lingling                        21

                             An amplifier
                             characteristic that
                             is linear except for
                             output saturation.
                             Output waveform
                             is clipped off.
                             distortion exists.

        SJTU Zhou Lingling                          22

                             An amplifier
                             transfer characteristic
                             that shows
                             Nonlinear distortion

        SJTU Zhou Lingling                        23

                     To obtain linear
                     operation the amplifier is
                     biased as shown。
                     The signal amplitude is
                     kept small.
                     This amplifier is
                     operated from a single
                     power supply, VDD.

        SJTU Zhou Lingling                        24

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