Phase detector for all-digital phase locked and delay locked...

Details Phase detector for all-digital phase locked and delay locked... Phase detector for all-digital phase locked and delay locked...

2006-10-17

2006-10-17

Dinh, Son T. (Department: 2824)

Static information storage and retrieval

Read/write circuit

Signals

C365S189070, C365S233100

Reexamination Certificate

active

07123525

ABSTRACT:
A phase detector is comprised of two cross-coupled gates which are capable of phase discrimination down to a level of approximately 10 picoseconds. An arbiter circuit, responsive to the cross-coupled gates, generates mutually exclusive UP and DOWN pulse signals. The UP and DOWN pulse signals may be filtered and used to control the delay line of an all digital delay locked or phase locked loop.

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