A 13b SAR ADC with eye-opening VCO based comparator

研究成果: Conference contribution

18 被引用数 (Scopus)

抄録

A low-power and high accuracy comparator based on voltage controlled ring-oscillator (VCO) is presented. By using the dead zone of phase detector effectively, the VCO comparator automatically changes its noise level depending on the input voltage level (Δvin). When Δvin is large, the comparator operates as a low-power delay-line based comparator. On the other hand, when Δvin is small, the VCO is enabled and eye is opened during the oscillation. This suppress input referred noise and enables accurate conversion. The number of oscillation cycle for one comparison is inversely proportional to Δvin and adaptive noise reduction is realized. The VCO comparator does not require any sort of tuning. A 13b SAR ADC with proposed VCO based comparator was fabricated in 65-nm CMOS. By off-chip LMS calibration, the ADC achieves SNDR 66 dB at 1 MS/s with FoM of 29fJ/conv.-step.

本文言語English
ホスト出版物のタイトルESSCIRC 2014 - Proceedings of the 40th European Solid-State Circuit Conference
編集者Pietro Andreani, Andrea Bevilacqua, Gaudenzio Meneghesso
出版社IEEE Computer Society
ページ411-414
ページ数4
ISBN(電子版)9781479956944
DOI
出版ステータスPublished - 2014 10 31
イベント40th European Solid-State Circuit Conference, ESSCIRC 2014 - Venezia Lido, Italy
継続期間: 2014 9 222014 9 26

出版物シリーズ

名前European Solid-State Circuits Conference
ISSN(印刷版)1930-8833

Other

Other40th European Solid-State Circuit Conference, ESSCIRC 2014
国/地域Italy
CityVenezia Lido
Period14/9/2214/9/26

ASJC Scopus subject areas

  • ハードウェアとアーキテクチャ
  • 電子工学および電気工学

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