A Passive Single-Ended-to-Differential-Converter with SAR ADC Achieving 6.1fJ/Conversion-Step

Mariska van der Struijk,Kevin Pelzers,Pieter Harpe

2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)（2021）

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摘要

This paper proposes a passive switched-capacitor single-ended-to-differential-converter (SDC) as a front-end of a differential SAR ADC to enable digitization of single-ended signals. Compared to active SDC solutions or single-ended SAR ADCs, the proposed solution offers the smallest total capacitance as well as best power efficiency and least chip area. A noise analysis further shows that the pass...

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Circuits and systems,Prototypes,Switches,Capacitance

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