[1]侯俊钦吴小培杨一军.微伏信号放大系统设计[J].计算机技术与发展,2007,(10):198-201.
　HOU Jun-qin,WU Xiao-pei,YANG Yi-jun.Design of Microvolt Signal Amplifier[J].,2007,(10):198-201.
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微伏信号放大系统设计()

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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

Author(s):: HOU Jun-qin; WU Xiao-pei; YANG Yi-jun; [1]Ministry of Education Key Laboratory of Intelligent Computing ＆ Signal Processing, Anhui University[2]Physics Dept. , Huaibei Coal Industry Teachers＇ College

Keywords:: microvolt signal; amplifier ; filter; optical electrical isolation

摘要:: 介绍一种微伏信号放大系统设计方法，该系统主要由放大、滤波以及隔离输出三部分组成。输入部分采用共模抑制比很高小信号放大器；滤波电路由一个四阶低通滤波和一个二阶高通滤波组成的带通滤波器以及陷波器组成，可有效滤除噪声及干扰；中间和末级放大采用常见的同相比例放大器进行信号的进一步放大；隔离输出部分采用线性度很高的光电隔离电路。总体电路放大增益高，对10μV以上信号放大效果良好，可很好地满足后级采集电路的信号输入要求

Abstract:: Introduced a design of microvott signal amplifier, which consists of amplifiers, filters and isolation. The part of input is a weak signal amplifier, the CMR is very. high. A band pass filter and a trap filter made up of the filer circuit which filtrate the noise and interference effectively. The signal is enlarged by the amplifiers in the middle and the end class. It is the output which applied the optical electrical isolation circuit. The gain of the whole circuit is very high, and the output signal is clear and stable. It is satisfied with the signal collection circuit

[1]杨阳张瑛.应用于北斗卫星通信系统的低噪声放大器设计[J].计算机技术与发展,2012,(09):213.
　YANG Yang,ZHANG Ying.Low Noise Amplifier Used in Beidou Navigation Satellite System[J].,2012,(10):213.

备注/Memo:: 国家自然科学基金（60271024）;安徽省人才资助基金（200400Z028）;安徽省教育厅项目（2007jyxm308）侯俊钦（1973-），男，山西神池人。硕士。讲师，研究方向为计算机应用

更新日期/Last Update: 1900-01-01