Charge pump for PLL/DLL

Details Charge pump for PLL/DLL Charge pump for PLL/DLL

2008-06-16

2009-11-10

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S148000, C375S374000

Reexamination Certificate

active

07616035

ABSTRACT:
A charge pump for use in a locked loop minimizes static phase error through the use of an operational amplifier. The operational amplifier also mitigates the effects of low power supply voltage. The charge pump further includes a startup circuit to establish a predetermined voltage level at the charge pump output node during startup.

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