OREGON STATE UNIVERSITY

You are here

Noise-shaping SAR ADC using three capacitors

TitleNoise-shaping SAR ADC using three capacitors
Publication TypeJournal Article
Year of Publication2013
AuthorsChen, C. - H., Y. Zhang, G. C. Temes, and J. L. Ceballos
JournalElectronics Letters
Volume49
Issue3
Pagination182 - 184
Date Published01/2013
ISSN1350-911X
Abstract

A simple and highly efficient successive-approximation registers (SAR) ADC realisation is proposed. It requires an opamp, a comparator and only three equal-valued capacitors. The proposed scheme is insensitive to the capacitor parasitics, and has a small capacitance spread. With an oversampled scheme, it also allows noise-shaping the remaining quantisation error. It is well-suited for low-frequency instrumentation and measurement applications, and for use in extended-counting ADCs.

DOI10.1049/el.2012.4204