Phase comparator

Details Phase comparator Phase comparator

H - Electricity

03

K

328/162

H03K 5/22 (2006.01) H03K 5/26 (2006.01) H03L 7/089 (2006.01)

Patent

CA 1184979

PHASE COMPARATOR Abstract of the Disclosure One of two capacitors in a phase comparator is discharged for a logic zero data input and is alternately charged with opposite polarities, depending on the state of a regenerated clock signal, for a logic one data input. The resultant charge of the capacitor when the data input again becomes zero is used to control a variable frequency oscillator which produces the clock signal, while the other of the two capacitors is discharged and then charged in the same manner. A phase locked loop including the phase comparator can accommodate arbitrary data sequences and does not require a low pass filter. - i -

409618

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