Analog delay locked loop with tracking analog-digital converter

Details Analog delay locked loop with tracking analog-digital converter Analog delay locked loop with tracking analog-digital converter

2006-01-17

2006-01-17

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S149000, C327S161000

Reexamination Certificate

active

06987409

ABSTRACT:
An analog DLL device includes a delay model for modeling delay time for buffering the external clock signal; a phase comparator for comparing a phase of the reference clock signal with an phase of an outputted signal from the delay model; a charge pump for pumping charges; a loop filter for generating a reference voltage; a voltage control delay line and a tracking digital-analog converter which converts the reference voltage to a digital value; and stores the digital value for keeping the reference voltage safely.

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