When a phase- locked loop is used as an FM demodulator, the output is the same as the
A)VCO frequency
B)error voltage
C)phase detector output
D)none of the above

Question

Quizplus · Accepted Answer

The output of a phase-locked loop (PLL) when used as an FM demodulator is the error voltage. This voltage is proportional to the difference in phase between the input signal and the VCO (Voltage-Controlled Oscillator) output, effectively demodulating the frequency modulated signal.

When a Phase- Locked Loop Is Used as an FM