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Temperature sensor for measuring thermistor resistance

  • US 10,582,854 B2
  • Filed: 08/05/2016
  • Issued: 03/10/2020
  • Est. Priority Date: 08/05/2016
  • Status: Active Grant
First Claim
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1. A method for determining thermistor resistance, the method comprising:

  • providing a temperature sensor network within a wireless sensor device, wherein the temperature sensor network includes a driver device and a receiver device;

    coupling the driver device to the receiver device using a dual bond wire system;

    separating the dual bond wire system into a first set of bond wires and a second set of bond wires;

    connecting each of the first set of bond wires and the second set of bond wires between a pin of a chip package and a pad on a chip die utilizing two pads per pin, wherein the first and second set of bond wires connect to the same pin of the chip package of the temperature sensor;

    sending current through the first set of bond wires of the dual-bond wire;

    determining at least one output voltage using at least one input current flowing through the dual bond wire system excluding the voltage through the first set of bond wires;

    amplifying the at least one output voltage;

    dithering the at least one amplified output voltage by applying a plurality of small voltages to the at least one amplified output voltage wherein the plurality of small voltages cover a range of a predetermined least significant bit (LSB) of an analog-to-digital converter (ADC) used for digitization; and

    determining the thermistor resistance using the at least one output voltage.

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