An 11-bit ring amplifier pipeline ADC with settling-time improvement scheme

Chankyu Bae, Seungwoo Shin, Jiteck Jung, Minsu Park, Kibaek Kwon, Jinhyun Kim, Taekyoung Jung, Joongho Choi

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

1 Scopus citations

Abstract

In this paper, an 11-bit ring amplifier (RAMP) pipeline ADC with settling-time improvement scheme is proposed. A RAMP-based ADC is adopted to achieve the reduced current consumption and hardware area. Novel technique utilizing the highpass filter is incorporated to improve the settling time of the amplifier. Each stage consists of a 1.5-bit multiplying digital-to-analog (MDAC) and flash ADC (FADC) since the unity-gain frequency of RAMP is affected by the load of MDAC. The conventional sample and hold amplifier (SHA) is used instead of RAMP in order to relieve the nonlinear distortion at the first stage. The pipelined ADC is designed in a 65nm CMOS process. For a single supply voltage of 1.2V, total current consumption is 15.5mA. At the sampling rate of 100MS/sec, SNDR and ENOB are 66.83dB and 10.81bits, respectively.

Original languageEnglish
Title of host publication2020 International Conference on Electronics, Information, and Communication, ICEIC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728162898
DOIs
StatePublished - Jan 2020
Event2020 International Conference on Electronics, Information, and Communication, ICEIC 2020 - Barcelona, Spain
Duration: 19 Jan 202022 Jan 2020

Publication series

Name2020 International Conference on Electronics, Information, and Communication, ICEIC 2020

Conference

Conference2020 International Conference on Electronics, Information, and Communication, ICEIC 2020
Country/TerritorySpain
CityBarcelona
Period19/01/2022/01/20

Keywords

  • MDAC
  • Pipeline ADC
  • Ring amplifier
  • SHA
  • Settling time

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