Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Patent
1999-06-24
2000-10-31
Le, Dinh T.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
327148, 327 7, 327142, 331 1A, H03L 7089
Patent
active
061408530
ABSTRACT:
A digital phase detector and charge pump circuit system reset circuit and method resets a digital phase detector according to the charge outputs between the charge pump circuits and a following loop filter. The sensing circuitry emulates portions of the circuitry of the digital phase detector and charge pump circuit system and minimizes deadband time. Current mirror portions of the charge pump circuit alternate between p-channel and n-channel devices to regularize output voltage levels produced by the charge pump circuit system.
REFERENCES:
patent: 4814726 (1989-03-01), Byrd et al.
patent: 5233314 (1993-08-01), McDermott et al.
patent: 5485125 (1996-01-01), Dufour
Cypress Semiconductor Corp.
Le Dinh T.
Maiorana P.C. Christopher P.
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