The Innosilicon high performance PLL is a high speed, low jitter frequency synthesizer, developed as an IP block to reduce time to market, risk, and cost in the development of Analog Front-End design. It can generate a stable high-speed clock from an ultra wide input clock. With excellent supply noise immunity, the PLL is ideal for use in noisy mixed signal SOC environments. This PLL integrates a Phase Frequency Detector (PFD), a Low Pass Filter (LPF), a Voltage Controlled Oscillator, and other associated circuits. All fundamental building blocks and fully programmable dividers are integrated in the core.