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Integratable phase-locked loop

  • US 5,107,227 A
  • Filed: 05/15/1990
  • Issued: 04/21/1992
  • Est. Priority Date: 02/08/1988
  • Status: Expired due to Term
First Claim
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1. A totally integratable phase locked loop (IPLL) comprisingsampled data filter means adapted to receive a first reference signal, the filter means sampling the first reference signal to provide a second reference signal,voltage or current controlled oscillator means (VCO) adapted to receive said second reference signal, the second signal serving to regulate the oscillation frequency of the oscillator means, the oscillator means providing an output digital signal which is fed back to the filter means to provide a clock signal for said sampling, andcalibrator means inter-coupling the filter means and the oscillator means, the calibrator means serving to set gain or bias for determining output/input characteristic of the oscillator means.

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