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.THEORY.

APPLICATIONS.

CIRCUITS

I!) ~c L ~~ ,

FIRST EDITION (Sixth Printing)

HANDBOOK OF OPERATIONAL

AMPLIFIER APPLICATIONS

This handboak has been compi led by the Applications Engineering Section of Burr-Brown Research Corporation . This section wi II welcome the opportunity of offering its technical assistance in the application of operational amplifiers.

BURR-BROWNRESEARCH CORPORATION 11400 ARI ZONA. 85706

Copyright 1963 Printed in U. $. A.

P. 0.

BOX

TUCSON.

Copyright by Burr-Brown

1963

Research Corporation

Circuit typical

diagrams in this handbook are included amplifier applications Although

to illustrate

operational

and are not intended as

constructural in preparing

information. this handbook,

reasonable carehas been taken

no responsibil ity is assumed for inaccuracies presented. Furthermore, such described

or consequences of using information information

does not convey to the purchaser of the amplifiers

any I icense under the patent rights of Burr-Brown Research Corporation or others.

ii

PREFACE

The purpose of this handbook is to provide a single source of information coveringamplifier. amplifiers, the proper design of circuits This manual will be helpful employing the versatile modern operational

to the experienced

user of operational applica-

as well as the new user, in extending

the range of potential

tions in which these devices can be used to advantage. It is assumed that the reader will but no particular The operational certain knowlege ofoperational have a basic knowledge of electronics, amplifiers is needed to use this handbook. subject to themselves is

ampl ifier is treated as a circuit

component inherently amplifiers

rules of operation.

The design of the operational

considered only when necessary to describe their less evident properties. Readers with a working refer directly inspection to the circuit knowlege ofoperational amplifiers will want to and

collection.

Those concerned with evaluation

should refer to the section on testing.

Readers whose job functions have amplifiers will want to prois

not previously ceed directly obtained.

brought them in contact with operational through the handbook until

the desired degree of familiarity

Refinements are continuously operational amplifiers,being made in the design and application of application remain the same.

of

yet the basic principles

Please do not hesitate to contact Burr-Brown at any time with questions or comments arising from the use of this handbook. It is, after all, intended for you, the user.

-~

~
Thomas R.

I? L".
Brown, Jr.,

9.President

--

iii

TABLE OF CONTENTS

Preface SECTION1Operational Amplifier Theory ion

iii

Introduction Computat ion-Contro I-I nstrumentat The Feedback Technique Notation Input Output Chopper Power Summary Electrical Circuit The Ideal Defining and Terminology Terminals Terminals Stabilized Connections of Notation Circuit Notation Operational the Ideal Point Amplifier Operational Restraint Using the Ideal Operational Amplifier Amplifier ModelsAmplifier Notation

1 2 2 3 3 3 4 4 5 5 6 6 6 7 7 8 10 12 12 14 14 15 15 15 17 17 17 19 21

A Summing Circuits

and Analyses

The Desirability Two Important Voltage Inverting Intuitive Current Reactive Integrator Differentiator Voltage Scaling Combining Differential Balanced Ideal-Real Adder Summer Circuit Input Amplifier Follower Non-lnverting

of Feedback Feedback Ampl ifier CircuitsAmpl ifier Analysis Output Elements Techniques

Functions Ampl ifier

Comparison

iv

v
Page

Characteristics of Practical Operational Open Loop Characteristics Open Loop Transfer Curve

Ampl ifiers

Open Loop Operation Output Limiting Frequency Dependent Properties Introduction Open Loop Gain and the Bode Plot Bode Plot Construction Closed Loop Gain Stabil ity Compensation...
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