A technique to reduce the impact of hysterisys in ΔΣ analog to digital converters

Chadi Jabbour, Van Tam Nguyen, Patrick Loumeau

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

Abstract

This paper deals with dynamic latch hysterisys and its effects on ΔΣ modulators. It sheds light on the difference between its impact on low pass and high pass modulators. It also presents a technique to reduce its effect on low pass ΔΣ modulators. This technique was tested using a 2nd order feed forward ΔΣ modulator. The employed dynamic latch was designed in a 1.2 V 65 nm CMOS technology. It has an hysterisys of 27 mv at 220 MHz. A Signal to Noise Ratio improvement of 9 dB was achieved using the proposed technique compared to the classical implementation.

Original languageEnglish
Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
Pages4017-4020
Number of pages4
DOIs
Publication statusPublished - 31 Aug 2010
Externally publishedYes
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

Keywords

  • Dynamic latch
  • Hysterisys
  • Sigma-delta

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