Noise-shaping SAR ADC using three capacitors

Chia-Hung Chen, Y. Zhang, J. L. Ceballos, G. C. Temes

Research output: Contribution to journalArticle

9 Scopus citations

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.

Original languageEnglish
Pages (from-to)182-184
Number of pages3
JournalElectronics Letters
Volume49
Issue number3
DOIs
StatePublished - 31 Jan 2013

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    Chen, C-H., Zhang, Y., Ceballos, J. L., & Temes, G. C. (2013). Noise-shaping SAR ADC using three capacitors. Electronics Letters, 49(3), 182-184. https://doi.org/10.1049/el.2012.4204