New clock feedthrough cancellation technique for analogue MOS switched-capacitor circuits

7 January 1982

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 18 (1) , 39-40
https://doi.org/10.1049/el:19820028

Abstract

A new technique for minimising DC offsets caused by clock feedthrough in switched-capacitor circuits is presented. Unlike some techniques presented in the past, the clock feedthrough cancellation is dependent only on matching and the common mode rejection ratio of the op-amps. The technique is quite general and can be applied to most switched-capacitor circuits that use differential input op-amps.

Keywords

COMMON MODE REJECTION RATIO
ANALOGUE MOS SWITCHED CAPACITOR CIRCUITS
CLOCK FEEDTHROUGH CANCELLATION TECHNIQUE
SWITCHED CAPACITOR FILTERS
OP-AMPS
DC OFFSET MINIMISATION

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