Half-digital phase-locked-loop circuit has voltage-controlled oscillator with analog control inlet and digital control inlet, phase or frequency detector with reference entrance and feedback entrance

摘要

The half-digital phase-locked-loop circuit has a voltage-controlled oscillator (VCO) with an analog control inlet and a digital control inlet, a phase or frequency detector (PFD) with a reference entrance and a feedback entrance and a load pump (CP), which is headed by an exit of phase or frequency detector.