Phase detector with extended linear range

Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By phase

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G01R 2500, H03D 1300

Patent

active

060753889

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

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