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    ELECTROCHEMICAL CELL CHARACTERISATION
    31.
    发明公开
    ELECTROCHEMICAL CELL CHARACTERISATION 审中-公开

    公开(公告)号：US20240125864A1

    公开(公告)日：2024-04-18

    申请号：US18453660

    申请日：2023-08-22

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： John P. LESSO ,  Toru IDO ,  Yanto SURYONO

    IPC: G01R31/389 ,  G01R31/36 ,  G01R31/3835

    CPC classification number: G01R31/389 ,  G01R31/3648 ,  G01R31/3835

    Abstract: Circuitry for determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising: drive circuitry configured to apply a stimulus to the electrochemical cell, the stimulus having a stimulation frequency and a stimulation amplitude; and measurement circuitry configured to: sample an output of the electrochemical cell at a sampling frequency to generate an output signal; determine an output amplitude of output signal at one or more alias frequencies, the one or more alias frequency based on the stimulation frequency and the sampling frequency; and determine the impedance of the cell at the stimulation frequency based on the output amplitude at the one or more alias frequencies and the stimulation amplitude; and control circuitry configured to: control the sampling frequency and the stimulation frequency such that a Nyquist rate of the sampling frequency is greater than stimulation frequency.

    ELECTROCHEMICAL CELL CHARACTERISATION
    32.
    发明公开
    ELECTROCHEMICAL CELL CHARACTERISATION 审中-公开

    公开(公告)号：US20230408596A1

    公开(公告)日：2023-12-21

    申请号：US18327454

    申请日：2023-06-01

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： John P. LESSO ,  Yanto SURYONO ,  Toru IDO

    IPC: G01R31/389 ,  G01N27/416 ,  H01M10/42

    CPC classification number: G01R31/389 ,  H01M10/4285 ,  G01N27/4163

    Abstract: Circuitry for determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising: drive circuitry configured to apply a stimulus to the electrochemical cell; sense circuitry configured to measure a response of the electrochemical cell to the stimulus; and processing circuitry configured to: determine an estimated transfer function of the electrochemical cell based on the stimulus and the response; determine a score for the estimated transfer function; and adjust the stimulus or circuitry used to measure the response based on the score.

    COMPUTING CIRCUITRY
    36.
    发明申请
    COMPUTING CIRCUITRY 审中-公开

    公开(公告)号：US20200327401A1

    公开(公告)日：2020-10-15

    申请号：US16838495

    申请日：2020-04-02

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Gordon James BATES ,  Toru IDO

    IPC: G06N3/063 ,  G11C13/00

    Abstract: This application relates to methods and apparatus for computing, especially to circuitry for performing computing, at least partly, in the analogue domain. The circuitry (200) comprises a plurality of memory cells (201), each memory cell having first and second paths between an electrode (202) for receiving an input current and respective positive and negative electrodes (203) for outputting a differential-current output. Memristors (101) are located in the first and second paths. The memory cells are configured into sets (205) of memory cells, the memory cells of each said set being connected so as to provide a differential current set output that corresponds to a combination of the cell outputs of all of the memory cells of that set. For each set, at least some of the memory cells of that set are configured to receive a different input current to other memory cells of that set.

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