A 1.8V pseudo-differential switched-capacitor amplifier

被引：1

作者：

Gunay, ZS ^{[1
]}

Soenen, EG ^{[1
]}

Embabi, S ^{[1
]}

Sanchez-Sinencio, E ^{[1
]}

机构：

[1] Maxim Integrated Prod, Sunnyvale, CA 90034 USA

来源：

IEEE 1998 CUSTOM INTEGRATED CIRCUITS CONFERENCE - PROCEEDINGS | 1998年

关键词：

D O I：

10.1109/CICC.1998.695002

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A switched-capacitor amplifier (SCA), for a 1.8V, 10 bit, 2.5Ms/sec data converter has been developed. For the SCA to settle within 0.05% at 2.5Ms/sec rate, a pseudodifferential core amplifier, consisting of two fully cascoded amplifiers with gain-enhancement is proposed. A switching scheme is used for offset cancellation and, simultaneously, for the capacitive level shifting needed to bias the gain-enhancement amplifiers. The core amplifier offers 100dB gain, more than 100MHz unity-gain frequency with 1.8V supply. The SCA sinks 1.25mA at 1.8V and has a closed loop gain of 2. It was fabricated in a 1.2 mu m CMOS process. Functionality and performance were verified.

引用

页码：373 / 376

页数：4