Phase detector with extended linear range

Details Phase detector with extended linear range Phase detector with extended linear range

1999-07-28

2000-08-08

Nuton, My-Trang

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

G01R 2500, H03D 1300

Patent

active

061007226

ABSTRACT:
A phase detector circuit comprising a control circuit, a pump-up circuit and a pump-down circuit. The control circuit may be configured to generate a control signal in response to (i) a data signal, (ii) a half-rate clock signal, and (iii) a quadrature of the half-rate clock signal. The pump-up circuit may be configured to generate a pump-up signal in response to (i) the data signal, and (ii) the control signal. The pump-down circuit may be configured to generate a pump-down signal in response to (i) the pump-up signal and (ii) the control signal.

REFERENCES:
patent: 5301196 (1994-04-01), Ewen et al.
patent: 5652531 (1997-07-01), Co et al.
patent: 5789947 (1998-08-01), Sato
patent: 5926041 (1999-07-01), Duffy et al.
patent: 5939901 (1999-08-01), Geddes
U.S. application No. 09/216,465, Kamal Dalmia et al., filed Dec. 18, 1998, Phase Detector.
U.S. application No. 09/283,058, Kamal Dalmia, filed Apr. 1, 1999, Method, Architecture and Circuit for Half-Rate Clock and/or Data Recovery.
U.S. application No. 09/302,213, Kamal Dalmia, filed Apr. 29, 1999, Phase Detector with Extended Linear Range.
U.S. application No. 09/302,214, Kamal Dalmia, filed Apr. 29, 1999, Clock and Data Recovery PLL Based on Parallel Architecture.

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