chapter 11 operational amplifier

Fig. 11.1

Fixed-gain amplifier.

Robert L. Boylestad

Electronic Devices and Circuit Theory, 9e

Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved.

Fig. 11.2

Circuit for Example 11.2.

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Fig. 11.3

Noninverting fixed-gain amplifier.

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Fig. 11.4


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Fig. 11.5

Constant-gain connection with multiple stages.

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Fig. 11.6

Circuit for Example 11.4 (using LM124).

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Fig. 11.7

Circuit for Example 11.5 (using LM348).

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Fig. 11.8

Summing amplifier.

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Fig. 11.9


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Fig. 11.10

Circuit for subtracting two signals.

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Fig. 11.11

Subtraction circuit.

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Fig. 11.12


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Fig. 11.13

Unity-gain (buffer) amplifier.

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Fig. 11.14

Use of buffer amplifier to provide output signals.

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Fig. 11.15

Connection for Example 11.9.

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Fig. 11.16

Ideal voltage-controlled voltage source.

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Fig. 11.17

Practical voltage-controlled voltage source circuits.

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Fig. 11.18

Ideal voltage-controlled current source.

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Fig. 11.19

Practical voltage-controlled current source.

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Fig. 11.20

Ideal current-controlled voltage source.

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Fig. 11.21

Practical form of current-controlled voltage source.

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Fig. 11.22

Ideal current-controlled current source.

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Fig. 11.23

Practical form of current-controlled current source.

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Fig. 11.24

Circuits for Example 11.10.

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Fig. 11.25

Op-amp dc millivoltmeter.

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Fig. 11.26

AC millivoltmeter using op-amp.

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Fig. 11.27

Display driver circuits: (a) lamp driver; (b) LED driver.

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Fig. 11.28

Instrumentation amplifier.

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Fig. 11.29


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Fig. 11.30

Ideal filter response: (a) low-pass; (b) high-pass; (c) bandpass.

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Fig. 11.31

First-order low-pass active filter.

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Fig. 11.32

Second-order low-pass active filter.

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Fig. 11.33

High-pass filter: (a) first order; (b) second order; (c) response plot.

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Fig. 11.34

Bandpass active filter.

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Fig. 11.34 (continued) Bandpass active filter.

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Fig. 11.35

Summing amplifier using a µA741 op-amp.

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Fig. 11.36

Op-amp dc voltmeter.

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Fig. 11.37

Low-pass active filter.

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Fig. 11.38

AC analysis of low-pass filter.

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Fig. 11.39

High-pass active filter.

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Fig. 11.40

dB output plot for the active high-pass filter circuit of Fig. 11.39.

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Fig. 11.41

Second-order high-pass filter.

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Fig. 11.42

Analysis setup for Fig. 11.41.

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Fig. 11.43

Probe plot of Vo for second-order high-pass active filter.

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Fig. 11.44

Probe plot of dB (Vo / Vi) for a second-order high-pass active filter.

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Fig. 11.45

Bandpass active filter.

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Fig. 11.46

Probe plot of bandpass active filter.

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Fig. 11.47

Problem 1.

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Fig. 11.48

Problem 2.

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Fig. 11.49

Problem 3.

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Fig. 11.50

Problem 6.

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Fig. 11.51

Problem 7.

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Fig. 11.52

Problem 8.

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Fig. 11.53

Problem 11.

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Fig. 11.54

Problem 12.

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Fig. 11.55

Problem 13.

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Fig. 11.56

Problem 14.

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Fig. 11.57

Problem 15.

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Fig. 11.58

Problem 16.

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Fig. 11.59

Problem 17.

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Fig. 11.60

Problem 18.

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Fig. 11.61

Problem 19.

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Fig. 11.62

Problem 20.

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Fig. 11.63

Problem 21.

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Fig. 11.64

Problem 22.

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