Title :
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
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;
Conference_Titel :
European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014 - 40th
Conference_Location :
Venice Lido
Print_ISBN :
978-1-4799-5694-4
DOI :
10.1109/ESSCIRC.2014.6942087
