Charge pump circuit with power management

Details Charge pump circuit with power management Charge pump circuit with power management

2006-10-16

2008-11-04

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S148000, C327S157000

Reexamination Certificate

active

07446595

ABSTRACT:
This invention provides a charge pump circuit used in phase-locked loop (PLL) having the function of power management for portable application. According to different applications, power management adjusts the power consumption modes of this PLL that will also correspond to different jitter degree. There are three kinds of modes contained in the PLL: the first mode is normal mode having the larger power consumption and smaller jitter, second mode is low power mode having moderate power consumption and moderate jitter, and third mode is the traditional mode having the smaller power consumption and the larger jitter.

REFERENCES:
patent: 6094078 (2000-07-01), Suzuki
patent: 6278333 (2001-08-01), Le et al.
patent: 6611161 (2003-08-01), Kumar et al.
patent: 6642759 (2003-11-01), Hughes
patent: 6876238 (2005-04-01), Kelkar et al.
patent: 7057465 (2006-06-01), Wakayama

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