Delay locked loop having charge pump gain independent of...

Details Delay locked loop having charge pump gain independent of... Delay locked loop having charge pump gain independent of...

2007-09-12

2008-11-18

Richards, N. Drew (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S536000, C327S537000, C327S390000, C307S110000, C363S059000

Reexamination Certificate

active

07453296

ABSTRACT:
A delay locked loop (DLL) having a charge pump gain independent of the operating frequency of the DLL. A method for providing a constant gain for a charge pump component of a delay locked loop (DLL) is disclosed, and includes: providing a switched capacitor stage responsive to a charge phase for charging a capacitor and a dump phase for dumping the capacitor; and aligning the charge phase and the dump phase such that a control voltage provided by the charge pump is independent of a frequency of a DLL charge and discharge phase.

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Masenas, U.S. Appl. No. 11/854,046, BUR920050279US3, Office Action Communication, Jul. 9, 2008, 16 pages.

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