Interface with Opamp output-impedance calibration technique for a large integrated 2-D resistive sensor array

Yohsuke Shiiki, Hiroki Ishikuro

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

    1 Citation (Scopus)

    Abstract

    In this paper, a noble gas sensing system using a large scale integrated resistive sensor array and its interface system is introduced. Accuracy improvement, compared to conventional techniques, was achieved using our proposed opamp output impedance calibration technique. This technique makes it possible to use a low power, weak drivability opamp in the interface circuit. This paper shows the calibration method which reduces the sneak path current error from 83.6% to 1.2% through MATLAB simulations. A prototype system with 1,024 gas sensors integrated in one chip, discrete ICs of opamp, ADCs, and an FPGA was developed, and the effectiveness of the system is demonstrated.

    Original languageEnglish
    Title of host publication2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781728103976
    DOIs
    Publication statusPublished - 2019 Jan 1
    Event2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Sapporo, Japan
    Duration: 2019 May 262019 May 29

    Publication series

    NameProceedings - IEEE International Symposium on Circuits and Systems
    Volume2019-May
    ISSN (Print)0271-4310

    Conference

    Conference2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019
    CountryJapan
    CitySapporo
    Period19/5/2619/5/29

    Keywords

    • Driving power
    • Gas sensing
    • Opamp
    • Resistive sensor array
    • Software calibration

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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  • Cite this

    Shiiki, Y., & Ishikuro, H. (2019). Interface with Opamp output-impedance calibration technique for a large integrated 2-D resistive sensor array. In 2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Proceedings [8702594] (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2019-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2019.8702594