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
收藏
页码：1176 / 1179
页数：4
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