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Current sensor including an integrated circuit die including a first and second coil

  • US 7,990,132 B2
  • Filed: 07/03/2008
  • Issued: 08/02/2011
  • Est. Priority Date: 06/30/2006
  • Status: Expired due to Fees
First Claim
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1. A current sensor, comprising:

  • a first and second inductor in an integrated circuit die inductively coupled with a conductor outside the integrated circuit die and located in a package holding the integrated circuit die;

    an integrator circuit coupled to the first and second inductors and configured to generate a sensed voltage corresponding to a current in the conductor sensed by the first and second inductors;

    a first compensation circuit for compensating the sensed voltage according to a first control value;

    a second compensation circuit for compensating the sensed voltage responsive to a sensed temperature; and

    wherein the first compensation circuit includes,a first programmable gain stage including an amplifier, for compensating the sensed voltage responsive to the first control value, the first control value configuring the first programmable gain stage to compensate for part to part differences in the integrator circuit; and

    a memory for storing the first control value.

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