A DIGITAL METHOD OF CONTROLLING ADAPT MODE AND DETECTING PHASE LOCK IN A FREQUENCY SYNTHESIZER
Original Publication Date: 1999-Jun-01
Included in the Prior Art Database: 2002-Aug-06
A method is presented which describes how one can detect phase lock in a frequency synthesizer and use it to automatically switch from adaptive mode to normal operating mode. The accuracy of this method is controlled by two design variables, time delay and the maximum count in a digital counter. The resulting circuit is compatible with existing and future large scale integrated circuit technologies.