A Fast Wake-Up and High Accuracy Sensor Interface by Synchronous Sampling with Power-Efficient Switching Regulator

Yuya Fuketa, Kohei Tatehora, Yohsuke Shiiki, Shuya Nakagawa, Hiroki Ishikuro

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

Abstract

This paper proposes a high-accuracy readout system with a high-efficient DC-DC converter. Thanks to a switching DC-DC converter with high conversion efficiency, the power loss in a regulator can be reduced. In the proposed system, sampling is performed using a synchronization signal generated from the switching regulator to avoid deterioration of readout accuracy caused by the ripple noise of the switching converter. Since the proposed technique does not require a large capacitor for ripple reduction, the wake-up time can be reduced, which is suitable for IoT devices operating intermittently. A prototype system developed in this work has achieved a reduction in sensor resistance readout variation to 0.006% while maintaining a high-speed wake-up.

Original languageEnglish
Title of host publication2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages154-157
Number of pages4
ISBN (Electronic)9781665424615
DOIs
Publication statusPublished - 2021 Aug 9
Event2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021 - Virtual, East Lansing, United States
Duration: 2021 Aug 92021 Aug 11

Publication series

NameMidwest Symposium on Circuits and Systems
Volume2021-August
ISSN (Print)1548-3746

Conference

Conference2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021
Country/TerritoryUnited States
CityVirtual, East Lansing
Period21/8/921/8/11

Keywords

  • analog-front-end
  • DC-DC converter
  • intermittent
  • IoT
  • sensor node
  • switching regulator
  • synchronous sampling

ASJC Scopus subject areas

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

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