Articles on Phased Locked Loops

A Great Tutorial on the Operation of the Phase Locked Loop. Part 2 of this tutorial covers more concepts related to the PLLs operation including Tracking and acquisition of the signal, Effects of Noise and more

A Great Tutorial on the Operation of the Phase Locked Loop. Part 1 of this tutorial starts out with the basics. Includes details on the PLLs operation illustrated by derivations, Figures and Examples. 

The term fractional-N describes a family of synthesizers that allow the minimum frequency step to be a fraction of the reference frequency. Over the years, a number of methods have been proposed to realize fractional-N frequency synthesis that are based on the basic concepts of traditional integer-N synthesis.

Among these methods, three techniques are best known in the indus...