A very compact CMOS instrumentation amplifier with nearly rail-to-rail input common mode range

Author

Bruschi, P. ; del Cesta, F. ; Longhitano, A.N. ; Piotto, M. ; Simmarano, R.

Author_Institution

Dipt. di Ing. dell´Inf., Univ. di Pisa, Pisa, Italy

fYear

2014

fDate

22-26 Sept. 2014

Firstpage

323

Lastpage

326

Abstract

This paper presents a compact, fully-differential instrumentation amplifier with nearly rail-to-rail input common mode range. The amplifier, which is based on an original topology, embodies chopper modulation for offset and flicker noise reduction. The paper describes the experimental results obtained with a prototype designed with the UMC 0.18 μm MM/RF CMOS process. The amplifier draws 42 μA at a supply voltage of 1.8 V with an input noise voltage density of 75 nV/sqrt(Hz). Total amplifier area is 0.056 mm².

Keywords

CMOS analogue integrated circuits; choppers (circuits); flicker noise; instrumentation amplifiers; integrated circuit noise; network topology; radiofrequency amplifiers; radiofrequency integrated circuits; CMOS instrumentation amplifier; UMC MM/RF CMOS process; chopper modulation; flicker noise reduction; fully-differential instrumentation amplifier; input noise voltage density; nearly rail-to-rail input common mode range; offset noise reduction; size 0.18 mum; topology; voltage 1.8 V; Choppers (circuits); Instruments; Modulation; Noise; Rails; Topology; Voltage measurement; chopper modulation; compact architecture; instrumentation amplifier; rail-to-rail common mode range;

fLanguage

English

Publisher

ieee

Conference_Titel

European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014 - 40th

Conference_Location

Venice Lido

ISSN

1930-8833

Print_ISBN

978-1-4799-5694-4

Type

conf

DOI

10.1109/ESSCIRC.2014.6942087

Filename

6942087