A new architecture for rail-to-rail input constant-gm CMOS operational transconductance amplifiers

被引：0

作者：

Ahmadi, MM ^{[1
]}

Lotfi, R ^{[1
]}

Sharif-Bakhtiar, M ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Elect Engn, Tehran, Iran

来源：

ISLPED'03: PROCEEDINGS OF THE 2003 INTERNATIONAL SYMPOSIUM ON LOW POWER ELECTRONICS AND DESIGN | 2003年

关键词：

rail-to-rail; transconductance; current summation; floating current source; input stage; operational transconductance amplifier;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A new architecture for constant-g. rail-to-rail(R-R) input stages is presented that has less than 5% deviation in g. over the entire range of the input common-mode voltage. Furthermore, a new structure for folded cascode amplifier based on the use of a floating current source is presented. Employing these techniques a low-power operational transconductance amplifier(OTA) with 100MHz unity-gain bandwidth, 106dB gain, 60degrees phase margin, 2.65V swing, and 6.4nV/rootHz input-referred noise with R-R input common-mode range is realized in a 0.8mum CMOS technology. This amplifier dissipates 10mW from a 3V power supply.

引用

页码：353 / 358

页数：6

共 9 条

[1] A FAST-SETTLING CMOS OP AMP FOR SC CIRCUITS WITH 90-DB DC GAIN [J].