A high resolution metastability-independent two-step gated ring oscillator TDC with enhanced noise shaping

Sang Hye Chung, Kyu Dong Hwang, Won Young Lee, Lee Sup Kim

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

16 Scopus citations

Abstract

This paper presents a high resolution two-step gatedring oscillator (TSGRO) time-to-digital converter (TDC) in an all digital phase-locked loop (ADPLL). TSGRO-TDC consists of a coarse step and a fine step gated-ring oscillator (GRO) TDC to achieve a high resolution. An edge aligner is used in the fine step GRO-TDC to enhance a first-order noise shaping property. A meta-stability free selection logic (MSFSL) is proposed in this paper which achieves low power and small area. In 0.13μm CMOS process, TSGRO-TDC has a 3ps raw resolution and first-order noise shaping.

Original languageEnglish
Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
Pages1300-1303
Number of pages4
DOIs
StatePublished - 2010
Event2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
Duration: 30 May 20102 Jun 2010

Publication series

NameISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

Conference

Conference2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
Country/TerritoryFrance
CityParis
Period30/05/102/06/10

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