Amplifier Circuits Table of Contents

Electronic Design

Electronic Design   1

Product Development   2

Design-Driven Analysis   3

Nonlinear Circuit Analysis   5

Amplifier Circuits

BJT T Model   10

The b Transform   11

Two-Port Networks   13

Amplifier Configurations   15

The Transresistance Method   17

Input and Output Resistances   21

The Cascade Amplifier   30

BJT Output Resistance   33

The Cascode Amplifier   35

The Effect of Base-Emitter Shunt Resistance   41

The Darlington  (Compound) Configuration   46

The Differential (Emitter-Coupled) Amplifier   50

Current Mirrors   58

Matched Transistor Buffers and Complementary Combinations   70

Closure   73

Amplifier Concepts

The Reduction Theorem   75

Transform of BJT and FET T Models   78

Common-Gate Amplifier with ro   81

Common-Source Amplifier with ro   83

Common-Drain Amplifier with ro   85

FET Cascode Amplifier with ro   86

Common-Base Amplifier with ro   88

Common-Collector and Common-Emitter Amplifiers with ro   90

Loaded Dividers, Source Shifting, and the Substitution Theorem   94

Closure & References   99

Feedback Amplifiers

Feedback Circuits Block Diagram   100

Port Resistances with Dependent Sources   101

General Feedback Circuit   102

Input Network Summing   103

Choosing xE, xf, and the Input Network Topology   106 

Two-Port Equivalent Circuits   108

Two-Port Loading Theorem   110 

Feedback Analysis Procedure   112

Noninverting Op-Amp   113

Inverting Op-Amp   115

Inverting BJT Amplifier Examples   118

Noninverting BJT Amplifier Examples   129

A Noninverting Feedback Amplifier with Output Block   139

Field-Effect Transistor Buffer Amplifier   143

Feedback Effects on Input and Output Resistance   145

Miller's Theorem   149

Noise Rejection by Feedback   151

Reduction of Nonlinearity with Feedback   153

Closure & References   153

Multiple-Path Feedback Amplifiers

Multiple-Path Feedback Circuits   155

CB Amplifier Feedback Analysis   158

CE Amplifier Feedback Analysis   156

CC Amplifier Feedback Analysis   174

Inverting Op-Amp with Output Resistance   176

Shunt-Feedback Amplifier Feedback Analysis   179

Shunt-Feedback Amplifier Substitution Theorem Analysis   187

An Idealized Shunt-Feedback Amplifier   191

Cascode and Differential Shunt-Feedback Amplifiers   196

Blackman's Resistance Formula   200

The Asymptotic Gain Method   207

Emitter-Coupled Feedback Amplifier   209

Emitter-Coupled Feedback Amplifier Example   211

Audiotape Playback Amplifier Examples   215

Closure & References   217


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