IMPROVED COMMON-MODE FEEDBACK-CIRCUIT SUITABLE FOR OPERATIONAL TRANSCONDUCTANCE AMPLIFIERS WITH TUNING

被引：6

作者：

WU, P

SCHAUMANN, R

机构：

[1] Department of Electrical and Computer Engineering, Portland State University, Portland

来源：

ELECTRONICS LETTERS | 1991年 / 27卷 / 02期

关键词：

FEEDBACK; AMPLIFIERS;

D O I：

10.1049/el:19910078

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A simple modification is proposed for a popular common-mode feedback circuit used in operational amplifiers, such that it can be used in an operational transconductance amplifier (OTA) without leading to significant DC offset caused by the unavoidable tuning of the OTA. Simulation results show that the improved circuit has nearly zero DC offset for the whole tuning range.

引用

页码：117 / 118

页数：2

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