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BIASING OF AN IONIC CURRENT SENSOR

  • US 20170363573A1
  • Filed: 06/17/2016
  • Published: 12/21/2017
  • Est. Priority Date: 06/17/2016
  • Status: Active Grant
First Claim
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1. An ionic current sensor array, comprising:

  • a master bias generator configured to generate a bias voltage; and

    a plurality of sensing cells, wherein each sensing cell of the plurality of sensing cells includes;

    an ionic current sensor;

    an integrating capacitor;

    a sense transistor coupled between the integrating capacitor and the ionic current sensor; and

    an amplifier coupled to provide a reference voltage to bias the ionic current sensor, wherein the amplifier comprises;

    a first transistor coupled to receive the bias voltage; and

    a second transistor coupled to the first transistor to provide the reference voltage to the ionic current sensor and coupled between a source of the sense transistor and the gate of the sense transistor.

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