SJTU Zhou Lingling 1 Introduction to Electronics Zhou Lingling
Dec 26, 2015
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Outline
• Organization of this textbook
• Objective of this course
• Basic conceptsSignalsAmplifier
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Organization of This Textbook
• Part --- Devices and Basic Circuits
• Part --- Analogy and Digital ICs
• Part --- Selected Topics
• Appendix
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Part --- Devices and Basic Circuits
• Diodes
• MOS Field-Effect Transistors
• Bipolar Junction Transistors
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Part --- Analogy and Digital ICs
• Single-Stage IC Amplifiers
• Differential and Multistage Amplifiers
• Feedback
• Operational-Amplifier
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Part --- Selected Topics
• Filters and Tuned Amplifiers
• Signal Generators and Waveform-Shaping Circuits
• Out-put Stages and Power Amplifiers
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Appendix
• VLSI Fabrication Technology
• Two-Port Network Parameters
• Some Useful Network Theorems
• Single-Time-Constant Circuits
• S-domain Analysis: Poles, Zeros, and Bode Plots
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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.
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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 sourceThévenin formNorton 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
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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.
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Time-Domain Representation of Signal
A symmetrical square-wave signal of amplitude V.
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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.
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Frequency-Domain Representation of Signal
The frequency spectrum of the periodic square wave consists of discrete frequencies.
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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
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Sampling
Sampling the continuous-time analog signal in (a)Results in the discrete-time signal in (b).
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ADC and DAC
Block-diagram representation of the analog-to-digital converter (ADC).
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Amplifier
A voltage amplifier fed with a signal vI(t) and connected to a load resistance RL.
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Amplifier
Transfer characteristic of a linear voltage amplifier with voltage gain Av.The straight line means the amplifier is a linear amplifier.
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Amplifier
An amplifier transfer characteristic that is linear except for output saturation.Output waveform is clipped off.Nonlinear distortion exists.
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Amplifier
An amplifier transfer characteristic that shows considerable nonlinearity.Nonlinear distortion