A 1 MS/s 9.15 ENOB Low-Power SAR ADC with Triple-Charge-Sharing Technique

Soonsung Ahn, Jaegeun Song, Chaegang Lim, Yohan Choi, Sooho Park, Yunsoo Park, Chulwoo Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a 10-b 1 MS/s SAR ADC with a proposed triple-charge-sharing technique to reduce switching energy. The proposed technique uses an additional reservoir capacitor, which has 10% of total CDAC size, to recycle 56% of switching energy. The energy-saving efficiency of this technique is most noticeable in MSBs, so the number of the MSBs to apply the technique has been optimized. The prototype of the proposed SAR ADC is implemented in a 28 nm CMOS technology at 1 V supply voltage. Logic power is minimized with 0.4 V supply voltage. The proposed SAR ADC consumes 2.02 J.l W and achieves ENOB of 9.15, equivalent to a Walden FoM of 3.55 fJ/conversion-step.

Original languageEnglish
Title of host publicationProceedings - International SoC Design Conference, ISOCC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-2
Number of pages2
ISBN (Electronic)9781728183312
DOIs
Publication statusPublished - 2020 Oct 21
Event17th International System-on-Chip Design Conference, ISOCC 2020 - Yeosu, Korea, Republic of
Duration: 2020 Oct 212020 Oct 24

Publication series

NameProceedings - International SoC Design Conference, ISOCC 2020

Conference

Conference17th International System-on-Chip Design Conference, ISOCC 2020
CountryKorea, Republic of
CityYeosu
Period20/10/2120/10/24

Keywords

  • charge sharing
  • low-power consumption
  • reservoir capacitor
  • SAR ADC
  • TCS
  • triple-charge-sharing

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Instrumentation
  • Artificial Intelligence
  • Hardware and Architecture

Fingerprint Dive into the research topics of 'A 1 MS/s 9.15 ENOB Low-Power SAR ADC with Triple-Charge-Sharing Technique'. Together they form a unique fingerprint.

Cite this