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

作者：Valero M R^*; Medrano N; Celma S; Calvo B

来源：Microelectronics Journal, 2015, 46(1): 96-102.

DOI：10.1016/j.mejo.2014.10.011

• CMOS analog integrated circuits
• Low-power design
• Operational amplifiers

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.

• 出版日期2015-1