An offset cancellation technique for two-stage CMOS operational amplifiers

被引：0

作者：

Lu, Chih-Wen ^{[1
]}

机构：

[1] Natl Chi Nan Univ, Dept Elect Engn, Nantou, Taiwan

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON INTEGRATED CIRCUIT DESIGN AND TECHNOLOGY, PROCEEDINGS | 2007年

关键词：

offset; offset voltage; offset cancellation; operational amplifier; op-amp;

D O I：

10.1109/INOW.2007.4302928

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

An offset cancellation technique for two-stage CMOS operational amplifiers is proposed. The auxiliary amplifiers are employed to cancel the offset voltage. The error voltage is stored on a capacitor during the cancellation phase and is canceled during the normal operation. An experimental prototype amplifier implemented in a 0.35-mu m CMOS technology demonstrates that the offset voltage is reduced to 1.898 mV under a clock frequency of 200 KHz.

引用

页码：154 / +

页数：2

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