Modeling Dielectric Absorption in Capacitors

The Designer s Guide Communitydownloaded from 2008, Kenneth S. Kundert All Rights Reserved1 of 19 Version 2d, June 2008It is well known that Dielectric Absorption plays a critical role in determining the accu-racy of analog sampled-data systems that are based on charge storage, such as sample-and-holds and switched-capacitor ADCs. Less appreciated, but no less important, is the role it plays in determining the quality factor, or Q, of the capacitor. Dielectric absorp-tion has both storage and loss components that act, and are significant, over the entire usable frequency range of the with background information on the origins of Dielectric Absorption , this paper presents two models for a capacitor that exhibits Dielectric Absorption .

Introduction 2 of 19 The Designer’s Guide Community www.designers-guide.org 1.0 Introduction A fundamental limitation in the accuracy of sample-and-holds and A-D converters is a phenomenon called dielectric absorption, which also goes by the names of dielectric

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  Dielectric, Absorption, Dielectric absorption

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