A 0.8-V 1.2-μW rail-to-rail fully differential OpAmp with adaptive biasing

M. R. Valero*, Santiago Celma-Pueyo, N. Medrano, B. Calvo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

4 Citations (Scopus)

Abstract

This paper presents an ultra low-power rail-to-rail fully differential operational amplifier (OpAmp) fabricated in a standard 0.18 μm CMOS technology. The proposed circuit uses transistors biased in the sub-threshold region for low-voltage low-power operation. For a 0.8 V single supply and 8 pF loads, experimental measurements shows a 51 dB open loop gain, 62° phase margin, 57 kHz unity gain frequency and a 750 mV linear output swing. Adaptive biasing provides 0.14 V/μs slew-rate, while a 73 dB CMRR is achieved thanks to a CMFF circuit, demonstrating the correct functionality of the OpAmp with a power consumption of 1.2 μW.

Original languageEnglish
Title of host publication2012 Proceedings of the European Solid State Circuits Conference, ESSCIRC 2012
Pages77-80
Number of pages4
DOIs
Publication statusPublished - 14 Dec 2012
Event38th European Solid State Circuits Conference, ESSCIRC 2012 - Bordeaux, France
Duration: 17 Sep 201221 Sep 2012

Publication series

NameEuropean Solid-State Circuits Conference
ISSN (Print)1930-8833

Conference

Conference38th European Solid State Circuits Conference, ESSCIRC 2012
CountryFrance
CityBordeaux
Period17/09/1221/09/12

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