Title :
New approaches to measurement of operational amplifier common-mode rejection ratio in the frequency domain
Author :
Brinson, M.E. ; Faulkner, D.J.
Author_Institution :
Sch. of Electron. & Commun. Eng., Univ. of North London, UK
fDate :
8/1/1995 12:00:00 AM
Abstract :
Four test circuits for measuring operational amplifier common-mode rejection ratio (CMRR) are described and analysed. Sample results are presented for the μA741, characterising the variation of CMRR with frequency. Two new test circuits and a variation on an existing technique offer significant improvements over previous methods and are capable of accurate measurements on high-performance operational amplifiers
Keywords :
circuit testing; frequency-domain analysis; operational amplifiers; μA741; common-mode rejection ratio; frequency domain measurement; operational amplifier; test circuits;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
DOI :
10.1049/ip-cds:19952031
