SIMPLE RAIL-TO-RAIL LOW-VOLTAGE CONSTANT-TRANSCONDUCTANCE CMOS INPUT STAGE IN WEAK INVERSION

被引：8

作者：

BOTMA, JH

WASSENAAR, RF

WIEGERINK, RJ

机构：

[1] MESA Research Institute, University of Twente, 7500 AE Enschede

来源：

ELECTRONICS LETTERS | 1993年 / 29卷 / 12期

关键词：

OPERATIONAL AMPLIFIERS; INTEGRATED CIRCUITS;

D O I：

10.1049/el:19930764

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 CMOS input stage for operational amplifiers is presented. To obtain a rail-to-rail input range an nMOS and a pMOS differential pair are driven in parallel. Both differential pairs operate in weak inversion. With the help of only four additional transistors a transconductance g(m) is obtained which is independent of the common input voltage. This extension does not increase the minimum required supply voltage.

引用

页码：1145 / 1147

页数：3

共 6 条

[1] PUSH-PULL CURRENT CIRCUIT FOR BIASING CMOS AMPLIFIERS WITH RAIL-TO-RAIL INPUT COMMON-MODE RANGE [J].