A 9-bit 50 MS/s CBSC pipelined ADC using time-shifted correlated double sampling

Po Chun Hsiao, I. Jen Chao, Chung Lun Hsu, Bin Da Liu, Chun Yueh Huang, Soon Jyh Chang

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

2 Citations (Scopus)

Abstract

Comparator-based switched-capacitor (CBSC) circuit provides a solution for insufficient impedance of the transistor in the advanced process, but the accuracy suffers from the overshoot error caused by comparator delay. In this paper, a time-shifted correlated double sampling (TSCDS) scheme for CBSC circuit is proposed to alleviate the overshoot error as well as mitigating double loading. Moreover, we propose an overshoot correction technique to further suppress the overshoot after employing TSCDS. Speed bottleneck in the conventional CBSC circuit is limited by the fine discharging phase. With the proposed TSCDS and the overshoot correction, the CBSC circuit exploits the coarse charging and removes the fine discharging phase to achieve a 9-bit 50 MS/s pipelined ADC. Simulation results demonstrate a 54.3-dB SNDR is achieved with 3.65-mW power consumption in 90-nm CMOS process and 1.2-V supply.

Original languageEnglish
Title of host publication54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011
DOIs
Publication statusPublished - 2011 Oct 13
Event54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011 - Seoul, Korea, Republic of
Duration: 2011 Aug 72011 Aug 10

Publication series

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

Other

Other54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011
CountryKorea, Republic of
CitySeoul
Period11-08-0711-08-10

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'A 9-bit 50 MS/s CBSC pipelined ADC using time-shifted correlated double sampling'. Together they form a unique fingerprint.

Cite this