Phase lock loop with continuous calibration and method therefor

Oscillators – With frequency calibration or testing

Reexamination Certificate

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C331S016000, C331S017000

Reexamination Certificate

active

07932785

ABSTRACT:
A circuit includes a phase lock loop circuit and a continuous phase lock loop calibration circuit. The continuous phase lock loop calibration circuit is operatively coupled to the PLL circuit and produces a continuous calibration signal based on a reference voltage from a reference voltage circuit to calibrate the PLL circuit on a continuous basis.

REFERENCES:
patent: 5175884 (1992-12-01), Suarez
patent: 5382922 (1995-01-01), Gersbach et al.
patent: 5748048 (1998-05-01), Moyal
patent: 6329883 (2001-12-01), Pacourek
patent: 7009456 (2006-03-01), Jasa et al.
patent: 2005/0077970 (2005-04-01), Da Dalt et al.

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