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Deterministic Dither Based Mismatch Characterization of Wide Range of Metal-Oxide-Metal Capacitors

  • Indian Institute of Technology Kharagpur

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

Abstract

This paper proposes a deterministic dither based capacitor mismatch measurement using a low-resolution analog-to- digital converter for a wide range of Metal-Oxide-Metal capacitor values (20 fF to 1 pF), thereby facilitating easier integration alongside actual blocks which use those capacitors. In this work, deterministic dithering has been demonstrated to be an effective method for mismatch estimation, reducing hardware overhead and relaxing the design of the analog-to-digital converter used to obtain the mismatch. System level simulations using MATLAB and subsequent circuit level simulations in UMC 65-nm show that the proposed technique can measure absolute capacitor mismatch to within 15-bits of accuracy and also statistically characterize capacitor mismatch having standard deviation as small as 0.01 %.

Original languageEnglish
Title of host publication2020 IEEE 63rd International Midwest Symposium on Circuits and Systems, MWSCAS 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages880-884
Number of pages5
ISBN (Electronic)9781538629161
DOIs
StatePublished - Aug 2020
Event63rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2020 - Springfield, United States
Duration: Aug 9 2020Aug 12 2020

Publication series

NameMidwest Symposium on Circuits and Systems
Volume2020-August
ISSN (Print)1548-3746

Conference

Conference63rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2020
Country/TerritoryUnited States
CitySpringfield
Period08/9/2008/12/20

Keywords

  • capacitor mismatch
  • Dither
  • monte-carlo
  • stochastic

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