A fast-locking phase-locked loop using CP control and gated VCO

摘要

A fast-locking phase-locked loop (PLL) using a CP control and a gated voltage-controlled oscillator is presented. This PLL is fabricated in a 90nm CMOS technology. The measured locking time is 3.78us from 640MHz to 800MHz. This PLL consumes 3.8mW for a supply of 1.2V and the active area is 0.0135mm².