Title :
CMRR analysis of instrumentation amplifiers
Author_Institution :
Politechniki ¿lqskiej ul, Instytut Elektroniki, Gliwice, Poland
Abstract :
A set of the simple and practical expressions for the CMRR of instrumentation amplifiers (IAs) based on 2, 3 and 4 opamps is given. These equations take into account not only mismatch of determined resistors but also the limited value of the CMRR of op-amps used. The derived equations are very useful for tolerance analysis which is shown on the example of the 3-op-amp IA
Keywords :
network analysis; operational amplifiers; CMRR analysis; instrumentation amplifiers; op-amps; operational amplifiers; tolerance analysis;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830371
