Skip to main content
Video s3
    Details
    Presenter(s)
    YAO LI Headshot
    Display Name
    YAO LI
    Affiliation
    Affiliation
    Tianjin University, China
    Country
    Author(s)
    Display Name
    YAO LI
    Affiliation
    Affiliation
    Tianjin University, China
    Display Name
    Yiqiang Zhao
    Affiliation
    Affiliation
    Tianjin University
    Display Name
    Mao Ye
    Affiliation
    Affiliation
    Tianjin University
    Display Name
    Yong Chen
    Affiliation
    Affiliation
    University of Macau
    Abstract

    This paper presents a high-performance readout circuit for tactile sensors based on the piezoresistance effect. Zero-potential and correlated double sampling methods are combined to suppress the undesired crosstalk issue, and the on-chip current digital-to-analog converter is proposed to compensate for the non-uniformity. Low-power successive-approximation-register analog -to-digital converter and customized serial peripheral interface are designed to perform digital quantization and communication. The prototype is fabricated in a 180-nm CMOS process, occupying an area of 4.8 mm² and consuming power of 285 μW at a 3.3-V/1.8-V supply. The chip is experimentally verified in a board system which achieves a non-uniformity compensation efficiency of 83%.

    Slides
    • A Readout Circuit for Tactile Sensor with Crosstalk Suppression and Non-Uniformity Compensation (application/pdf)