Calibration technique for phase locked loop leakage current

Details Calibration technique for phase locked loop leakage current Calibration technique for phase locked loop leakage current

2006-02-14

2006-02-14

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S157000

Reexamination Certificate

active

06998887

ABSTRACT:
A method and apparatus for post-fabrication calibration and adjustment of a phase locked loop leakage current is provided. The calibration and adjustment system includes an adjustment circuit that adjusts a leakage current offset circuit to compensate for the leakage current of a capacitor. The capacitor connects to a control voltage of the phase locked loop. Such control of the leakage current in the phase locked loop allows a designer to achieve a desired phase locked loop operating characteristic after the phase locked loop has been fabricated. A representative value of the amount of compensation desired in the leakage current may be stored and subsequently read to adjust the phase locked loop.

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patent: WO 98/53554 (1998-11-01), None
International Search Report for PCT/US03/24093, mailed Jan. 7, 2004 (3 pages).

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