The AD9901 is a digital phase/frequency discriminator capable of directly common to other digital designs. standard PLL configurations is also eliminated.
frequency through feedback. – Key block is phase detector. ? Realized as digital gates that create pulsed signals. Analog. Loop Filter. Phase. Detect. VCO ref(t).
The ‘HC297 and CD74HCT297 are high-speed silicon gate CMOS devices that are pin-compatible with low power Schottky TTL (LSTTL). These devices areA phase detector suitable for square wave signals can be made Digital phase detectors can also be based on a sample
The phase detector is a key element of a phase locked loop and many other circuits. There are several types ranging from digital to analogue mixer and more.