A high-performance 1.2 V-99 μW rail-to-rail CMOS class AB amplifier

被引:6
作者
Valero, M. R. [1 ]
Medrano, N. [1 ]
Celma, S. [1 ]
Calvo, B. [1 ]
机构
[1] Univ Zaragoza, Grp Elect Design I3A, Zaragoza, Spain
关键词
CMOS analog integrated circuits; Low-power design; Operational amplifiers; OPAMP;
D O I
10.1016/j.mejo.2014.10.011
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a compact, reliable 1.2 V low-power rail-to-rail class AB operational amplifier (OpAmp) suitable for integrated battery powered systems which require rail-to-rail input/output swing and high slew-rate while maintaining low power consumption. The OpAmp, fabricated in a standard 0.18 mu m CMOS technology, exhibits 86 dB open loop gain and 97 dB CMRR. Experimental measurements prove its correct functionality operating with 1.2 V single supply, performing very competitive characteristics compared with other similar amplifiers reported in the literature. It has rail-to-rail input/output operation, 5 MHz unity gain frequency and a 3.15 V/mu s slew-rate for a capacitive load of 100 pF, with a power consumption of 99 mu W. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:96 / 102
页数:7
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