CMOS digital phase and frequency difference detector.
A phase frequency detector works on the logic which compares the phase of two input signals. It is an asynchronous circuit which is made up of four flip-flops.
It not only produces output when the input signals have phase difference but also produces the output when the signals have frequency difference.
Block diagram of design:
Mangalapally Naveen Kumar.
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Our project is mainly based on the phase and frequency difference detection between I/O digital signals or any two different signals.