A high-resolution time-based resistance-to-digital converter with TDC and counter

Shuya Nakagawa, Kaito Horikoshi, Hiroki Ishikuro

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

    1 Citation (Scopus)

    Abstract

    This paper presents a high resolution time-based resistance-to-digital converter for amp-less high-precision sensor application. In order to solve the trade-off between resolution and bandwidth, a time-to-digital converter (TDC) is combined with a resistance-controlled-oscillator. The TDC is used to measure the fractional part of oscillation period, which realize a high resolution and conversion rate with moderate oscillation frequency. Proposed fractional period estimation technique reduce the required number of TDC and save power consumption. A prototype system was developed and 23 ppm resolution of resistance change at conversion rate of 5kSps was experimentally demonstrated.

    Original languageEnglish
    Title of host publication2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages242-245
    Number of pages4
    ISBN (Electronic)9781538673928
    DOIs
    Publication statusPublished - 2019 Jan 22
    Event61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018 - Windsor, Canada
    Duration: 2018 Aug 52018 Aug 8

    Publication series

    NameMidwest Symposium on Circuits and Systems
    Volume2018-August
    ISSN (Print)1548-3746

    Conference

    Conference61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018
    CountryCanada
    CityWindsor
    Period18/8/518/8/8

    Keywords

    • Resistance-to-digital converter
    • Sensor
    • Time-based ADC
    • Time-to-digital conveter

    ASJC Scopus subject areas

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

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