CMOS wide-swing differential VCO for fully integrated fast PLL

Abstract

Presents a fully integrated CMOS fast phase locked loop (PLL), based on a new wide swing differential voltage controlled oscillator (WSDVCO). The proposed PLL incorporates new simple architecture of well known PLL building blocks (a dynamic phase-frequency detector, a charge pump, an on-chip low-pass filter, a WSDVCO and a frequency divider). The present version of the WSDVCO allows one to obtain wide tuning range of 40 to 730 MHz simulated with Spectre simulator using 0.25 /spl mu/m CMOS technology. The simplicity of the proposed PLL building blocks permits one to design high performance PLL.