PVT drift compensation

  • US 7,519,844 B2
  • Filed: 06/22/2005
  • Issued: 04/14/2009
  • Est. Priority Date: 06/22/2005
  • Status: Active Grant
First Claim
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1. A timing circuit for generating a timing signal having a predetermined relationship with a reference signal, comprising:

  • a locked loop for generating the timing signal, comparing the phase of the reference signal to the phase of the timing signal, and adjusting the phase of the timing signal based on such comparison; and

    a PVT (Process-Voltage-Temperature) line operatively associated with the locked loop so that PVT drift in the PVT line counters PVT drift in the locked loop.

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