对数放大器直流漂移抑制方法研究  

Research on the DC Offset Suppression Method of Logarithmic Amplifier

作　　者：陆一[1] 

机构地区：[1]西南电子设备研究所,成都610036

出　　处：《微电子学》2016年第2期187-189,共3页Microelectronics

摘　　要：为了解决对数放大器严重的直流漂移问题,以L-17D为典型对象,分析了对数放大器的工作原理以及导致其直流漂移的机理,提出了3种实用的对数放大器直流漂移抑制方法,将其直流漂移控制在可接受的±0.1V范围以内。In order to solve the problem of bad DC offset in logarithmic amplifier,the L-17 Dcircuit had been taken as an example,and the operational principle of logarithmic amplifier and the mechanism of the DC offset were analyzed.Three practical suppression methods were presented,which could control the DC offset within the acceptable range of ±0.1V.

关 键 词：对数放大器 直流漂移 抑制 

分 类 号：TN722.58[电子电信—电路与系统]