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Crystal oscillator emulator

  • US 20070182500A1
  • Filed: 04/03/2007
  • Published: 08/09/2007
  • Est. Priority Date: 10/15/2002
  • Status: Active Grant
First Claim
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1. An integrated circuit comprising:

  • a microelectromechanical (MEMS) resonator circuit that generates a reference frequency and that includes;

    a semiconductor oscillator that generates resonator drive signal having a drive frequency; and

    a MEMS resonator that receives said resonator drive signal;

    a temperature sensor that senses a temperature of said integrated circuit; and

    memory that stores calibration parameters and that selects at least one of said calibration parameters as a function of said sensed temperature, wherein said drive frequency is based on said calibration parameters.

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