集成运放的非线性失真分析及电路应用  

Nonlinear Distortion Analysis and Application of Integrated Operational Amplifier Circuit

作　　者：王军旗[1] 刘晓晖[1] 邹显炳[1] 李向阳[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,四川成都611731

出　　处：《现代电子技术》2010年第8期9-12,共4页Modern Electronics Technique

基　　金：国家"863"计划资助项目(2007AA01Z209)

摘　　要：集成运放差分放大电路的非线性失真分析,可以用来对集成运放电路特性进行优化设计,抑制带内各次谐波的产生。对双集成运放AD8062的非线性参数分析,优化其外围电路的连接方式,减小共模输入电压,实现了集成运放的线性输出。AD8062的电路优化设计提高了ISM频段定位系统接收前端射频电路增益,有效抑制了各次谐波的产生,输出信号幅度满足后端A/D采样器的门限要求。The nonlinear distortion analysis of the integrated operationaldifferential amplifier circuit can be applied to the characteristics optimization of integrated operational amplifier circuits and the rejection of all the harmonics in the band. The linear output of the integrated operational amplifier was realized by the nonlinear parameter analysis of the dual-integrated operational amplifier AD8062, the optimization for the connection mode of its peripheral circuits, and reduction of the common mode input voltage. The optimized AD8062 circuit designation improves the gain of the RF receiver destination in the ISM frequency location system,and its output signal amplitude can exceed the threshold of the A/D converter.

关 键 词：集成运放 非线性失真 共模抑制比 差分放大电路 

分 类 号：TN925[电子电信—通信与信息系统]