Design Analysis of PLL Components

Contemporary digital systems use clocks for sequencing their operations and for synchronizing between different functional units. Data-transfer rates and clock frequencies have been constantly increasing with every generation of processing technology .Phase locked-loops (PLLs) are widely used in order to generate well-timed on-chip clocks to be used in high-performance digital systems. A PLL is a closed loop system that locks the phase of its output signal to an input reference signal. PLL‗s are widely used in radio, computer and telecommunications systems where it is necessary to stabilize a generated signal or to detect incoming signals. In this report we design and discuss about different component of PLL (Phase Lock Loop), mainly on Phase Frequency Detectors and VCO (voltage controlled oscillator)