PLL with swappable tuning loops

Details PLL with swappable tuning loops PLL with swappable tuning loops

2006-06-20

2006-06-20

Chang, Joseph (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

C331S179000, C331S03600C, C327S156000, C455S260000

Reexamination Certificate

active

07064618

ABSTRACT:
Some embodiments provide a switch capacitor circuit to generate a first output capacitance based on a control signal, a main loop circuit to generate an output signal based on the control signal, and an oscillating circuit to generate an oscillating signal, a frequency of the oscillating signal based at least on the first output capacitance and the output signal.

REFERENCES:
patent: 5991312 (1999-11-01), Koenig et al.
patent: 6330683 (2001-12-01), Jeddeloh
patent: 2001/0020875 (2001-09-01), Jansson
patent: 2002/0008589 (2002-01-01), Lanoman et al.
patent: 2002/0135428 (2002-09-01), Gomez
patent: 2002/0167362 (2002-11-01), Justice et al.

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