A 3mW 6b 4GS/s Subranging ADC with Adaptive Offset-Adjustable Comparators

Chung Ming Yang, Tai-Haur Kuo

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

Abstract

This work implements a 3mW 6b 4GS/s subranging ADC in 28nm CMOS. With the proposed adaptive offset-adjustable comparators (OACs), the subranging architecture is free of both conventional reference-voltage switching to increase speed and the resistor ladder to save power. A proposed calibration technique mitigates the intrinsic offset of the OACs and improves the linearity of the fine ADC in different subrange regions. At 3.6GS/s, the ADC has the best Walden FOM of 22.7fJ/conv-step compared with prior state-of-the-art ADCs.

Original languageEnglish
Title of host publication2019 IEEE Custom Integrated Circuits Conference, CICC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538693957
DOIs
Publication statusPublished - 2019 Apr 1
Event40th Annual IEEE Custom Integrated Circuits Conference, CICC 2019 - Austin, United States
Duration: 2019 Apr 142019 Apr 17

Publication series

NameProceedings of the Custom Integrated Circuits Conference
Volume2019-April
ISSN (Print)0886-5930

Conference

Conference40th Annual IEEE Custom Integrated Circuits Conference, CICC 2019
CountryUnited States
CityAustin
Period19-04-1419-04-17

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Yang, C. M., & Kuo, T-H. (2019). A 3mW 6b 4GS/s Subranging ADC with Adaptive Offset-Adjustable Comparators. In 2019 IEEE Custom Integrated Circuits Conference, CICC 2019 [8780174] (Proceedings of the Custom Integrated Circuits Conference; Vol. 2019-April). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2019.8780174