Phase locked loop integrated circuit generates clock signal at output terminal and varies capacitance of output terminal concurrently with changing frequency of clock signal

摘要

A voltage controlled oscillator (VCO) generates a clock signal at an output terminal in response to control signals generated based on UP and DOWN pumping signals, and varies the capacitance of the output terminal concurrently with changing frequency of the clock signal. An independent claim is also included for phase locked loop device.