测量放大器电路的设计  

Circuit Design of Measurement Amplifier

作　　者：黄金平[1] 武洪涛[1] 

机构地区：[1]江汉石油学院电子与信息工程系,湖北荆州434023

出　　处：《江汉石油学院学报》2002年第3期91-92,共2页Journal of Jianghan Petroleum Institute

摘　　要：设计了一个测量放大器电路 ,它由差动放大电路、共模抑制电路、双端单端转换电路和程控增益放大电路组成。给出了各电路的电路图及设计方法。该放大器电路是一种连续程控调节电路。讨论了提高仪器放大器共模抑制比、实现增益步距为 0A measurement amplifier circuit is designed, which consists of circuits of differential amplifier,a common-mode rejection, double-end and single-end conversions and programmed gain amplifier. The circuit diagrams and design methods of each amplifier are given. The amplifier circuit is an internal continuous program control circuit. The methods for improving the amplifier common-mode rejection ratio and programming 0.5 gain step are discussed.

关 键 词：测量放大器 电路设计 共模抑制比 差动放大电路 共模抑制电路 

分 类 号：TN722[电子电信—电路与系统]