A Calibration-Free 71.7dB SNDR 100MS/s 0.7mW Weighted-Averaging Correlated Level Shifting Pipelined SAR ADC with Speed-Enhancement Scheme

Tsung Chih Hung, Jia Ching Wang, Tai Haur Kuo

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

Abstract

With the increasing demand for next-generation communication, the trend of developing wide-bandwidth, high-resolution ADCs has emerged, where pipelined SAR (PIPE-SAR) ADCs [1], [2] have become popular owing to their excellent power-efficiency due to the fewer number of opamps. However, the finite opamp gain error limits the resolution of PIPE-SAR ADCs. Without calibration, this work proposes the weighted-averaging correlated level shifting (WACLS) technique for PIPE-SAR ADCs to theoretically eliminate the finite opamp gain error and operate with a speed-enhancement scheme to overcome the speed-degradation drawback of the prior two-phase CLS-based residue amplification [3], [4]. In addition, a duty-cycle-controlled ring amplifier (ringamp) with quick start-up is proposed for power saving.

Original languageEnglish
Title of host publication2020 IEEE International Solid-State Circuits Conference, ISSCC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages256-258
Number of pages3
ISBN (Electronic)9781728132044
DOIs
Publication statusPublished - 2020 Feb
Event2020 IEEE International Solid-State Circuits Conference, ISSCC 2020 - San Francisco, United States
Duration: 2020 Feb 162020 Feb 20

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume2020-February
ISSN (Print)0193-6530

Conference

Conference2020 IEEE International Solid-State Circuits Conference, ISSCC 2020
CountryUnited States
CitySan Francisco
Period20-02-1620-02-20

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Hung, T. C., Wang, J. C., & Kuo, T. H. (2020). A Calibration-Free 71.7dB SNDR 100MS/s 0.7mW Weighted-Averaging Correlated Level Shifting Pipelined SAR ADC with Speed-Enhancement Scheme. In 2020 IEEE International Solid-State Circuits Conference, ISSCC 2020 (pp. 256-258). [9063055] (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; Vol. 2020-February). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISSCC19947.2020.9063055