Introduction to Electronics Zhou Lingling SJTU Zhou Lingling

Outline Organization of this textbook Objective of this course Basic concepts Signals Amplifier SJTU Zhou Lingling

Organization of This Textbook Part --- Devices and Basic Circuits Part --- Analogy and Digital ICs Part  --- Selected Topics Appendix SJTU Zhou Lingling

Part  : Devices and Basic Circuits Diodes MOS Field-Effect Transistors Bipolar Junction Transistors Operational Amplifier SJTU Zhou Lingling

Part : Analogy and Digital ICs Single-Stage IC Amplifiers Differential and Multistage Amplifiers Feedback Operational-Amplifier SJTU Zhou Lingling

Part  ： Selected Topics Filters and Tuned Amplifiers Signal Generators and Waveform-Shaping Circuits Output Stages and Power Amplifiers SJTU Zhou Lingling

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

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 design. As the fundamental of the IC design. SJTU Zhou Lingling

Basic concepts Basic concepts Signals Amplifier SJTU Zhou Lingling

Signals 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 SJTU Zhou Lingling

Representation of the Signal Source Two alternative representations of a signal source: (a) the Thévenin form (b) the Norton form SJTU Zhou Lingling

Time-Domain Representation of Signal An arbitrary voltage signal vs(t). SJTU Zhou Lingling

Time-Domain Representation of Signal Sine-wave voltage signal of amplitude Va and frequency f = 1/T Hz. The angular frequency ω = 2πf rad/s. SJTU Zhou Lingling

Time-Domain Representation of Signal A symmetrical square-wave signal of amplitude V. SJTU Zhou Lingling

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

Frequency-Domain Representation of Signal The frequency spectrum of the periodic square wave consists of discrete frequencies. SJTU Zhou Lingling

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 only have two possible value:low and high. SJTU Zhou Lingling

Analog and Digital Signals Sampling Sampling the magnitude of an analog signal at discrete instants of time and representing each signal sample by a number results in a digital signal. ADC and DAC SJTU Zhou Lingling

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

ADC and DAC Block-diagram representation of the analog-to-digital converter (ADC). SJTU Zhou Lingling

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

Amplifier Transfer characteristic of a linear voltage amplifier with voltage gain Av. The straight line means the amplifier is a linear amplifier. SJTU Zhou Lingling

Amplifier An amplifier transfer characteristic that is linear except for output saturation. Output waveform is clipped off. Nonlinear distortion exists. SJTU Zhou Lingling

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Amplifier An amplifier transfer characteristic that shows considerable nonlinearity. Nonlinear distortion SJTU Zhou Lingling

Amplifier 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