Abstract
There are two part in this paper. The first part in this paper is a discussion about delta sigma modulation phase lock loop circuit design and the second part in this pa- per is appendix about linear control oscillator circuit design . In delta sigma phase lock loop circuit design, the pur- pose and specific are described and overview of integer, fractional delta sigma phase lock loop . Final part of delta sigma phase lock loop is design and simulation. In linear control oscillator circuit design, the motive of design linear voltage control is described and intro- duce some knowledge about ring oscillator .Then, some linear voltage control oscillator introduction are pre- sent . Final part of linear control oscill- ator is design and simulation .