A 6-bit 10-GS/s 63-mW 4x TI time-domain interpolating flash ADC in 65-nm CMOS

Dong Ryeol Oh, Jong In Kim, Min Jae Seo, Jin Gwang Kim, Seung Tak Ryu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

A 6-b 4x time-interleaved (TI) time-domain interpolating flash ADC is presented for high-speed applications. The dynamic-amplifier-structured voltage-to-time converter (VTC) enables linear zero-crossing interpolation in the time-domain with an interpolation factor of eight, resulting in reduced power consumption and area. A sequential slope-matching offset calibration scheme is proposed not only for VTC offset but also for interpolated zero-crossing accuracy. The prototype 6-bit 10-Gs/s 4x TI flash ADC was implemented in a 65-nm CMOS process and occupied 0.22 mm2 including a 4-to-1 output MUX and 243-times output decimator. The ADC achieves SNDR of 28.9 dB at Nyquist input and a total power consumption of 63 mW under supplies of 0.85 V and 1.1 V for the ADC cores and clock generator + T/Hs, respectively.

Original languageEnglish
Title of host publicationESSCIRC 2015 - Proceedings of the 41st European Solid-State Circuits Conference
EditorsFranz Dielacher, Wolfgang Pribyl, Gernot Hueber
PublisherIEEE Computer Society
Pages323-326
Number of pages4
ISBN (Electronic)9781467374705
DOIs
StatePublished - 30 Oct 2015
Event41st European Solid-State Circuits Conference, ESSCIRC 2015 - Graz, Austria
Duration: 14 Sep 201518 Sep 2015

Publication series

NameEuropean Solid-State Circuits Conference
Volume2015-October
ISSN (Print)1930-8833

Conference

Conference41st European Solid-State Circuits Conference, ESSCIRC 2015
Country/TerritoryAustria
CityGraz
Period14/09/1518/09/15

Keywords

  • ADC
  • Analog to digital converter
  • flash ADC
  • interpolation
  • offset calibration
  • time-interleaved ADC

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