Introduction to PLLs
A PLL is a circuit that causes a particular system to track with another one. More precisely, a PLL is a circuit synchronizing an output signal (generated by an oscillator) with a reference or input signal in frequency as well as in phase. In the synchronizedoften called lockedstate the phase error between the oscillator's output signal and the reference signal is zero, or remains constant.
Please disable any pop-up blockers for proper viewing of this paper.