Phase locked loop integrated circuits having fast locking...

Details Phase locked loop integrated circuits having fast locking... Phase locked loop integrated circuits having fast locking...

2007-11-06

2007-11-06

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S148000

Reexamination Certificate

active

11178629

ABSTRACT:
An integrated circuit device includes a fast-locking phase locked loop (PLL). This PLL includes a phase-frequency detector and first and second charge pumps, which are responsive to first and second control signals generated by the phase-frequency detector. The first and second charge pumps have different current sourcing characteristics when the first control signal is active and different current sinking characteristics when the second control signal is active.

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