A Low-Voltage High-Gain Wide-Bandwidth Class-AB Differential Difference Amplifier

被引：2

作者：

Ge, Fuding ^{[1
]}

Thomas, Brent ^{[1
]}

机构：

[1] Intel Corp, Chandler, AZ 85226 USA

来源：

2008 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS 2008), VOLS 1-4 | 2008年

关键词：

D O I：

10.1109/APCCAS.2008.4746235

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a CMOS low-voltage high gain and wide bandwidth differential difference amplifier (DDA). It is based on a robust two-stage class-AB amplifier with cascode Miller compensation. The first stage is a folded-cascode OTA with improved wide swing biasing circuit and the second stage is class-AB output stage biased with translinear circuit. The two input pairs can be either NMOS or PMOS pair. It achieves a DC open loop gain of 80 dB and unity-gain bandwidth of 20 MHz with 380 mu A current drawn from a single 1.5V power supply in 0.13 mu m CMOS. Its application for current feedback instrumentation amplifier is discussed.

引用

页码：1176 / 1179

页数：4

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