Power efficient design of zero-crossing-based switched-capacitor circuits

Dong Jick Min, Soo Hwan Kim, Jae Hoon Shim

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

2 Scopus citations

Abstract

The zero-crossing-based integrator (ZCBI) is an attractive low-power alternative to the conventional switched-capacitor integrators that are based on operational transconductance amplifiers. The zero-crossing detector (ZCD) and the current source in a ZCBI controls the charge transfer with much less static power consumption. However., the ZCBI requires the reset phase where the integrator output is reset to 0 V and this may increase the dynamic power consumption. This paper presents a couple of circuit techniques to reduce the dynamic power consumption and increase the speed/accuracy of ZCBIs. The proposed techniques have been applied to a second-order Delta-Sigma ADC and it achieves the 68.8-dB peak SNR for the bandwidth of 0.39 MHz with the power consumption of 286μ W from a 1.2-V power supply.

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

  • Delta-sigma modulator
  • Switched-capacitor circuits
  • Zero-crossing-based circuits

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