Pll Block Diagram And Working. The input signal is directly proportional to the output frequency of the vco fo. Phase comparator detector.
Pll mathematical equation can be expressed as fo fr n hence fo can be changed to different values within the range in either of the following ways. Block diagram of pll. A phase locked loop pll mainly consists of the following three blocks phase detector.
The figure 1 depicts block diagram of phase locked loop i e.
It is basically a flip flop consisting of a phase detector a low pass filter lpf and a voltage controlled oscillator vco. Basic phase locked loop basic diagram. Pll circuit in order to explain pll working operation. The block diagram of a basic pll is shown in the figure below.
