Phase comparator and clock recovery circuit

Details Phase comparator and clock recovery circuit Phase comparator and clock recovery circuit

2005-02-08

2005-02-08

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S002000

Reexamination Certificate

active

06853223

ABSTRACT:
The present invention aims at providing a phase comparator and a clock recovery circuit suitable for applications that support data signals with high-speed bit rates in the order of one gigabit per second. Phase comparators receive frequency divided signals NHOLDH and NHOLDL generated from a data signal RD/NRD, respectively, and intermittently perform a phase comparison between a signal dDAT and a signal CLK. This increases the timing margin for the phase comparison and makes it possible to perform a phase comparison for high-speed bit rate signals. The provision of phase comparators that serve as clock recovery circuits makes it possible to handle data signals with high-speed bit rates in the order of one gigabit per second.

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