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Array column integrator

  • US 8,432,149 B2
  • Filed: 06/30/2011
  • Issued: 04/30/2013
  • Est. Priority Date: 06/30/2010
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a chemically-sensitive field-effect transistor (chemFET) including a first terminal and a second terminal, and a floating gate coupled to a passivation layer; and

    an integrator circuit coupled to the second terminal of the chemFET via a data line, the integrator circuit to;

    bias the first terminal of the chemFET to a first bias voltage during a read interval;

    induce current through the chemFET via the data line during the read interval; and

    generate an output signal proportional to an integral of a voltage or current on the data line in response to the induced current through the chemFET during the read interval.

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