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A phase-locked loop (PLL) is a feedback circuit consisting of a:
- APhase detector
- BLow-pass filter
- CVCO
- DAll of these
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A phase-locked loop is a control system that generates an output signal whose phase is related to the phase of an input signal.
The circuit can track an input frequency or it can generate a frequency that is a multiple of the input frequency.
The basic elements of a PLL circuit are phase comparator/detector, a loop filter, voltage controlled oscillator (VCO).
The circuit can track an input frequency or it can generate a frequency that is a multiple of the input frequency.
The basic elements of a PLL circuit are phase comparator/detector, a loop filter, voltage controlled oscillator (VCO).