Modeling Dielectric Absorption in Capacitors

Version 2d, June 2008 It is well known that dielectric absorption plays a critical role in determining the accuracy of analog sampled-data systems that are based on charge storage, such as sampleand-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 absorption has both storage and loss components that act, and are significant, over the entire usable frequency range of the capacitor.

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