A Novel Integrated CMOS Switch Circuit for High PrecisionSample-and-Hold Technique

Authors:
M. F. Li;S. Y. Yep;Y. C. Lim
Affiliations:
Department of Electrical Engineering, National University of Singapore, Singapore 119260;Department of Electrical Engineering, National University of Singapore, Singapore 119260;Department of Electrical Engineering, National University of Singapore, Singapore 119260
Venue:
Analog Integrated Circuits and Signal Processing
Year:
1997

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Abstract

A new CMOS switch circuit is proposed for the implementationof high precision sample-and-hold. The switch includes a currentmirror and switching action is controlled by current pulses.This reduces charge injection due to clock feedthrough and thecharge injection is input signal independent, resulting in agreatly improved sample-and-hold accuracy.