wangli1013 发表于 2009-7-9 14:42:21

ADI仪表放大器设计.pdf~~~

仪表放大器设计指南ourdev_459704.pdf(文件大小:2.87M) (原文件名:仪表放大器设计指南.pdf)

wangli1013 发表于 2009-7-9 14:43:22

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——仪表放大器的内部原理 ..........................2-1

太多了就不编辑了。。。。。

zgx8 发表于 2009-7-9 15:13:22

谢了，刚要看

mkpoon 发表于 2009-7-9 16:01:12

下了看看,謝謝!

wajlh 发表于 2009-7-9 16:02:29

make谢谢楼主分享

_yuming 发表于 2009-7-9 16:04:50

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——仪表放大器的内部原理 ...................................................................................................................2-1
单运放减法器提供的仪表放大器功能 ...........................................................................................................2-1
用输入缓冲器改进简单减法器 .......................................................................................................................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——单电源共模电压制设计考虑 ...................................................................................2-5
自稳零仪表放大器 ..........................................................................................................................................2-6
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 ...................................................................................................................3-2
高性能仪表放大器 ..........................................................................................................................................3-2
固定增益仪表放大器 ......................................................................................................................................3-7
低成本仪表放大器 ..........................................................................................................................................3-8
单电源仪表放大器 ..........................................................................................................................................3-8
低功耗、单电源仪表放大器 ...........................................................................................................................3-11
iii
第Ⅳ章——单片差分放大器 ...............................................................................................................................4-1
差分（减法器）放大器 .....................................................................................................................................4-1 高频差分（接收器）放大器 ...............................................................................................................................4-6 第Ⅴ章——仪表放大器的应用技巧 ...................................................................................................................5-1
双电源工作 ......................................................................................................................................................5-1
单电源工作 ......................................................................................................................................................5-1
电源旁路、解耦和稳定性问题 .........................................................................................................................5-1 输入接地返回的重要性 ..................................................................................................................................5-1
AC 输入耦合 ..................................................................................................................................................5-2
阻容元件匹配 ..................................................................................................................................................5-2
电缆终端 ..............................................................................................................................................................5-3 仪表放大器的输入保护基本原理 .......................................................................................................................5-3 防ESD和DC过载的输入保护 ..........................................................................................................................5-3 用外接二极管对输入保护 ...............................................................................................................................5-5 防ESD和瞬态过载的输入保护 .......................................................................................................................5-5
影响DC精度的设计问题 ....................................................................................................................................5-6 对最低限失调电压漂移的设计 .......................................................................................................................5-6 对最低限增益漂移的设计 ...............................................................................................................................5-6 实际解决方案 ..................................................................................................................................................5-7
方案1：采用优质的增益电阻器 .......................................................................................................................5-7 方案2：采用固定增益的仪表放大器 ...............................................................................................................5-7 RTI和RTO误差 ..................................................................................................................................................5-7
失调误差 ..........................................................................................................................................................5-8
噪声误差 ..........................................................................................................................................................5-8
降低仪表放大器电路中的RFI整流误差 ............................................................................................................5-8 设计实用的RFI滤波器 ....................................................................................................................................5-8 用食谱式方法选择RFI ...........................................................................................................5-10
具体的设计案例 ............................................................................................................................................5-10
用于AD620系列仪表放大器的RFI抑制电路 ...............................................................................................5-10
用于微功耗仪表放大器的 RFI 抑制电路 .....................................................................................................5-11 用于AD623仪表放大器的RFI抑制电路 .......................................................................................................5-12
用于AD8225仪表放大器的RFI抑制电路 .....................................................................................................5-12
采用X2Y电容器的共模滤波器 .....................................................................................................................5-13
用于仪表放大器RFI滤波器的共模 RF扼流圈 ............................................................................................5-14
RFI测试 .............................................................................................................................................................5-15
采用低通滤波器提高信噪比 .............................................................................................................................5-15
外部调整CMR和建立时间 ...............................................................................................................................5-17
第Ⅵ章——仪表放大器与差分放大器的应用电路 ...........................................................................................6-1 复合仪表放大器电路具有优良的高频CMR .......................................................................................................6-1 采用AC激励的应变计测量 ................................................................................................................................6-2
AD628精密增益IC的应用 ..................................................................................................................................6-3 为什么使用一种增益IC ？..............................................................................................................................6-3
具有单极点LP滤波器的标准差分输入ADC缓冲器 ......................................................................................6-4
改变输出比例系数 ..........................................................................................................................................6-4
用一只外部电阻器设置AD628的0.1以下增益 ..............................................................................................6-4
具有双极点LP滤波的差分输入电路 ..............................................................................................................6-5 用AD628构成精密增益IC ..............................................................................................................................6-6
用AD628接成＋10或者－10精密增益 ...........................................................................................................6-6 用AD628接成＋11精密增益 .........................................................................................................................6-7 用AD628接成＋1精密增益.............................................................................................................................6-8
用前馈增加带宽提供－9.91增益 ....................................................................................................................6-8
iv
试选法选择RFI滤波器元件值 ...................................................................................................................5-10
电流变送器抑制接地噪声 ..................................................................................................................................6-9
高幅度模拟输入ADC接口 ...............................................................................................................................6-10
高速同相求和放大器 ........................................................................................................................................6-11
高电压监测电路 ................................................................................................................................................6-13
单电源高CMR电路 ..........................................................................................................................................6-13
48V总线精密监测电路 .....................................................................................................................................6-15
采用低端开关的高端电流检测 .........................................................................................................................6-16
采用高端开关的高端电流检测 .........................................................................................................................6-17
电桥应用 ............................................................................................................................................................6-17
标准电桥电路 ................................................................................................................................................6-17
单电源数据采集系统 ....................................................................................................................................6-18
低压降双极性电桥驱动器 .............................................................................................................................6-18
传感器接口的应用 ............................................................................................................................................6-19
医用心电图仪的应用 ........................................................................................................................................6-19
远程负载检测技术 ............................................................................................................................................6-21
精密电压电流转换器 ........................................................................................................................................6-22
电流传感器接口 ................................................................................................................................................6-22
输出缓冲低功耗仪表放大器 .............................................................................................................................6-23
4 mA～20 mA单电源接收器 ............................................................................................................................6-23
单电源热电偶放大器 ........................................................................................................................................6-24
专业音频产品 ....................................................................................................................................................6-24
第Ⅶ章——仪表放大器与现代ADC匹配..........................................................................................................7-1
计算对ADC分辨率的要求 ..............................................................................................................................7-1
ADI公司仪表放大器与现代ADC匹配 ...........................................................................................................7-2
高速数据采集 ..................................................................................................................................................7-4
用于高速数据采集的仪表放大器电路 ...........................................................................................................7-6
附录A ——仪表放大器技术指标......................................................................................................................A-1
（A）技术指标(工作条件) ...............................................................................................................................A-3
（B）CMR ........................................................................................................................................................A-3
（C）AC CMR .................................................................................................................................................A-3
（D）失调电压 ..............................................................................................................................................A-3
（E）输入偏置电流和失调电流 .....................................................................................................................A-4
（F）工作电压范围 .........................................................................................................................................A-4
（G）静态电源电流 ........................................................................................................................................A-4
（H）建立时间 ................................................................................................................................................A-5
（I）增益 .........................................................................................................................................................A-5
（J）增益范围 .................................................................................................................................................A-5
（K）增益误差 ................................................................................................................................................A-5
（L）非线性误差 ............................................................................................................................................A-6
（M）增益与温度的关系 ...............................................................................................................................A-6
（N）单电源仪表放大器的关键技术指标 .....................................................................................................A-6
输入和输出电压摆幅 .....................................................................................................................................A-6
附录B ——差分放大器和仪表放大器选择表.................................................................................................B-1
索引 .....................................................................................................................................................................C-1
产品索引 .............................................................................................................................................................D-1

CXDQ888 发表于 2009-7-12 21:27:59

谢谢！好东东

longquan 发表于 2009-7-21 20:01:50

好资料要顶

ggddll 发表于 2009-7-25 18:09:02

ding

dory 发表于 2009-10-21 14:41:20

好资料要顶多个!!!

cattail 发表于 2010-3-22 18:11:24

回复【楼主位】wangli1013 蓝白
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谢谢分享！！！

Laborer 发表于 2010-3-23 20:38:27

感謝LZ分享...

yudancing 发表于 2010-4-27 16:55:05

hao

cnzhy88 发表于 2010-6-6 09:05:07

谢谢啊。正需要呢。

shockstar 发表于 2010-7-6 23:04:49

真好用的着

eduhf_123 发表于 2010-7-7 01:55:24

MARK IA
MARK 仪放
MARK 仪表放大器

xxwjj 发表于 2010-8-8 17:54:30

谢了

DIZHUWANG2008 发表于 2010-9-2 21:16:49

牛人谢了

Shi_Tou 发表于 2010-11-8 11:47:32

回复【楼主位】wangli1013 蓝白
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谢谢了，正好需要开发一套表，需要仪表放大器方面的知识。

ranqling 发表于 2011-7-15 16:10:41

mark

416446891 发表于 2011-7-15 18:38:48

MARK

xiaowenwen 发表于 2011-8-12 15:53:23

顶楼主~~

kingsabbit 发表于 2011-8-28 18:29:41

顶一下，资料不错

li287167543 发表于 2012-9-14 21:04:43

顶{:handshake:}

bin060117 发表于 2012-9-15 16:19:03

好东西，正需要呢，谢谢楼猪了{:biggrin:}

wuzhpo720 发表于 2015-11-4 21:33:54

感謝LZ分享...下载了

LQS1200 发表于 2015-11-5 14:02:57

还有没有其他像这样的文档？

DogFall 发表于 2020-12-20 11:21:21

谢谢楼主分享

现在成为者 发表于 2021-1-20 09:03:45

好东西并且很清晰

GordSun 发表于 2021-2-10 21:15:59

谢谢分享

yu2007118 发表于 2021-2-16 11:22:25

下了看看,謝謝!
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