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仪表放大器应用工程师指南
第3版
仪表放大器应用工程师指南
第 3 版
［美］Charles Kitchin 和 Lew Counts 著
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高光天 审译
Analog Devices , Inc.
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©2006 Analog Devices, Inc. Printed in U.S.A.
G02678–15–9/06(B)
Simplified Chinese language edition by Analog Devices, Inc.
Copyright © 2007
本书中文简体专有翻译出版权由 ADI 公司所有，未经许可
不得以任何形式或手段复制或抄袭本书内容。
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目录
第 I 章－仪表放大器的基本原理 ........................................................................................................................1-1
前言.........................................................................................................................................................................1-1
仪表放大器与运算放大器的区别是什么？ .......................................................................................................1-1
信号放大与 CMR ...............................................................................................................................................1-1
运算放大器与仪表放大器的 CMR 比较 .........................................................................................................1-3
差分放大器 ...........................................................................................................................................................1-5
在何处使用仪表放大器和差分放大器？.............................................................................................................1-5
数据采集 ….......................................................................................................................................................1-5
医用仪器 ….......................................................................................................................................................1-6
监测和控制电子设备 .......................................................................................................................................1-6
软件编程方面的应用 .......................................................................................................................................1-6
音频方面的应用 …...........................................................................................................................................1-6
高速信号调理 ...................................................................................................................................................1-6
视频方面的应用 …...........................................................................................................................................1-6
功率控制方面的应用 …...................................................................................................................................1-6
仪表放大器的外部特性 .......................................................................................................................................1-6
表征高品质仪表放大器的其它特性是什么？.....................................................................................................1-7
高 AC（和 DC）CMR ...........................................................................................................................................1-7
低失调电压和低失调电压漂移 .......................................................................................................................1-7
匹配的高输入阻抗 ...........................................................................................................................................1-8
低输入偏置电流和低失调电流误差 ...............................................................................................................1-8
低噪声 ...............................................................................................................................................................1-8
低非线性 ...........................................................................................................................................................1-8
增益选择方便 ...................................................................................................................................................1-8
充裕的带宽 .......................................................................................................................................................1-8
差分输入到单端输出的转换 ...........................................................................................................................1-9
R-R 输入和输出 ................................................................................................................................................1-9
电源与带宽、转换速率和噪声之间的关系 .....................................................................................................1-9
第 II 章一仪表放大器的内部原理 .....................................................................................................................2-1
单运放减法放大器提供的仪表放大器功能 .................................................................................................2-1
用输入缓冲器改进简单的减法放大器 ...........................................................................................................2-1
三运放仪表放大器 …………….......................................................................................................................2-2
三运放仪表放大器设计考虑 ...........................................................................................................................2-3
基本的双运放仪表放大器 ...............................................................................................................................2-4
双运放仪表放大器——单电源工作共模电压设计考虑 ...............................................................................2-5
第 III 章—单片仪表放大器 ................................................................................................................................3-1
优于用运放构成的仪表放大器 ...............................................................................................................3-1
采用仪表放大器还是差分放大器？......... .......................................................................................................3-1
单片仪表放大器设计——内部原理
高性能仪表放大器 ...........................................................................................................................................3-2
低成本仪表放大器 ...........................................................................................................................................3-5
引脚可设置精密增益仪表放大器 ...................................................................................................................3-6
自稳零仪表放大器 ...........................................................................................................................................3-8
固定增益（低漂移）仪表放大器 .....................................................................................................................3-16
单电源仪表放大器 ...................................................................................................................................3-17
低功耗、单电源仪表放大器 ...........................................................................................................................3-19
增益可设置仪表放大器 .................................................................................................................................3-20
第 IV 章—单片差分放大器 .................................................................................................................................4-1
差分放大器产品 .............................................................................................................................................4-1
AD8205差分放大器 .........................................................................................................................................4-3
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