Calibration technique for SAR analog-to-digital converters

Tao Tong, Wenhuan Yu, Pavan K. Hanumolu, Gabor C. Temes

Research output: Contribution to conferencePaperpeer-review

Abstract

A self-calibration technique was developed for SAR analog-to-digital converters that employ binary-weighted capacitors. High-accuracy calibration is achieved by finding and correcting the mismatch of each capacitor independently. The mismatch errors are extracted at power-up, and corrected by individual calibration DACs during the conversion. Unlike in previous schemes, in the proposed method the residual error in the calibration of a capacitor does not affect the calibration of any other capacitor. Simulation results show that the proposed method is also insensitive to the non-idealities of the calibration DACs.

Original languageEnglish (US)
Pages2993-2996
Number of pages4
DOIs
StatePublished - Sep 28 2012
Externally publishedYes
Event2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
Duration: May 20 2012May 23 2012

Other

Other2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
CountryKorea, Republic of
CitySeoul
Period5/20/125/23/12

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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