Talk:Phase detector

From Wikipedia, the free encyclopedia

a signal changes its phase by 2 pi multiplied its frequency. phase detector can be realised by sequencial as well as analog circuit by didode or cmos for high speed. normally a charge pump is required before filtering the dc ouput by low pass filter, a charge pump gives constant current output which is nothing but a three pole switch. many software is availave for pll simulation from which code loader is the modarate freeware from naional semiconductor.