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Integrated CMOS high precision piezo-electrically driven clock

  • US 7,098,748 B2
  • Filed: 09/21/2001
  • Issued: 08/29/2006
  • Est. Priority Date: 09/21/2001
  • Status: Expired due to Fees
First Claim
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1. A clock oscillator embedded in an integrated circuit, comprising:

  • a piezoelectric resonator formed on a substrate of the integrated circuit;

    a clock generator formed on the substrate and coupled to the piezoelectric resonator;

    sensors adapted to sense one or more environmental parameters affecting the piezoelectric resonator, the one or more sensors including a temperature sensor, a hot electron sensor, and a shock sensor;

    a processor coupled to the clock generator and the sensors and adapted to process the one or more environmental parameters and adjust the frequency of the clock generator based on the one or more environmental parameters; and

    a primary oscillator coupled to the clock generator to be calibrated by the frequency of the clock generator.

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