Low Power and Low Jitter Phase Frequency Detector for Phase Lock Loop
In recent years, the design of low power and low jitter PLL for the different application has become one of the greatest challenges in high-performance Very Large Scale Integration (VLSI) design. As a consequence, many techniques have been introduced to minimize the power consumption and reduction in jitter of new VLSI circuits. Integrated Phase-Locked Loops (PLL's) play the versatile roles in the applications of clock generator, time synchronization and clock multiplication. A typical Phase Lock Loop architecture is depicted. It consists of a Phase Frequency Detector (PFD), a charge pump, a loop filter, a Voltage-Controlled Oscillator (VCO) and a frequency divider.