OREGON STATE UNIVERSITY

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Accuracy-enhanced switched-capacitor stages using low-gain opamps

TitleAccuracy-enhanced switched-capacitor stages using low-gain opamps
Publication TypeJournal Article
Year of Publication2013
AuthorsChen, C. - H., Y. Zhang, and G. C. Temes
JournalElectronics Letters
Volume49
Issue1
Pagination22 - 23
Date Published01/2013
ISSN1350-911X
Abstract

A charge compensation technique is proposed for switched capacitor stages with low-gain opamps. It cancels the error charge flow during the operation phase, thus enhancing the accuracy. A capacitive T-network can be employed to implement the resulting large capacitor ratio. A switched-capacitor integrator and a sample-and-hold stage were designed and simulated to verify the proposed technique.

DOI10.1049/el.2012.3827