BIAS VOLTAGE CIRCUIT AND PHASE LOCKED LOOP

摘要

A bias voltage circuit and phase locked loop are provided to shorten jitter peking to have phase margin by controlling the band width of bias voltage generation circuit. A bias circuit(100) controls current based on band width control signal. An amplifying device(200) amplifies input signal with regulated current from bias control circuit as an operating current. An output device(300) outputs a vias control voltage responding to the output signal of amplifying device.