Doubt about PLL(Phase locked loop) as demodulator.

Thread Starter


Joined Jun 24, 2015
Hi everyone

I'm beginning with the PLL at lab, and I've to design a PPL to demodulate a signal, using this chip CD54HC4046A.

If all the phase detectors of the chip are digital circuits (EXOR, JK-FLIPFLOP, PFD) the question are:
1. Can I demodulate my FM signal (Sine wave that change its frequency) no matter it is analog?
2. At the output of the PLL (VCO input), will I get the demodulated sine wave or a digital signal with the center frequency of the carrier sine wave?