Non-binary cyclic and binary SAR hybrid ADC

Kota Inoue, Tatsuji Matsuura, Akira Hyogo, Hao San

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a hybrid A/D converter consist of non-binary or beta-weighted cyclic ADC, and binary SAR ADC. The upper bits or MSBs are converted by beta-weighted cyclic ADC. With the help of automatic beta-value estimation, MSBs are converted accurately. One of the capacitors of the cyclic ADC is composed by a binary weighted capacitor array. After MSB conversion, residual voltage of cyclic ADC remains on the capacitor array. Lower bits or LSBs are determined using this capacitor array by Successive Approximation (SAR-) algorithm. Beta-weighted cyclic brings high accuracy to the ADC, and lower bit SAR-ADC helps to improve conversion speed and to reduce power consumption.

Original languageEnglish
Title of host publicationProceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017
EditorsAndrzej Napieralski
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages105-109
Number of pages5
ISBN (Electronic)9788363578114
DOIs
Publication statusPublished - 8 Aug 2017
Event24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017 - Bydgoszcz, Poland
Duration: 22 Jun 201724 Jun 2017

Publication series

NameProceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017

Conference

Conference24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017
CountryPoland
CityBydgoszcz
Period22/06/1724/06/17

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Keywords

  • SAR ADC
  • cyclic ADC
  • high speed operation
  • low power consumption
  • non-binary
  • β-expansion

Cite this

Inoue, K., Matsuura, T., Hyogo, A., & San, H. (2017). Non-binary cyclic and binary SAR hybrid ADC. In A. Napieralski (Ed.), Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017 (pp. 105-109). [8005163] (Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/MIXDES.2017.8005163