运算放大器共模抑制比的仿真与测试  

Simulation and Measurement Techniques for CMRR of Operational Amplifiers

作　　者：黄晓宗[1] 黄文刚[1] 刘伦才[1] 晏开华[1] 何峥嵘[1] 王成鹤[1] 王国强[1] 

机构地区：[1]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2012年第2期154-158,共5页Microelectronics

摘　　要：从运算放大器共模抑制比(CMRR)定义开始,对多种仿真和测试方法进行分析和比较,深入论述辅助元器件(如电阻和辅助放大器)对待测器件(DUT)仿真和测试结果的影响,分别总结出适合于仿真和测试的方法,为运算放大器设计过程中的仿真验证和封装后的测试提供参考。Various methods for simulation and measurement of common-mode rejection ratio（CMRR） of operational amplifiers were analyzed and compared.Effects of external elements,such as resistors and auxiliary amplifiers,on the device-under-test（DUT） were discussed in detail.Finally,methods suitable for simulation and measurement were summarized,respectively,which may provide a reference for simulation during design of operational amplifiers and measurement after packaging.

关 键 词：运算放大器 共模抑制比 仿真 测试 

分 类 号：TN722[电子电信—电路与系统]