Simple analog phase detector circuit diagram

Published:2013/2/18 0:20:00 Author:Ecco | Keyword: Simple analog phase detector | From:SeekIC

It is composed of an operational amplifier TL072 and analog switch MAX4521, it is applicable to PLL circuit or lock-in amplifier. Supply voltage is ± 5V, the input and output signal level is below ± 4V, and the operating frequency is 10Hz ~~ 100kHz. The UiA and UiB are respectively input sine wave and square wave with the same frequency, square wave's duty cycle is 50 %, the output waveform of A1 is shown in Figure (b).



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