Coarse-mover with sequential finer tuning step

A phase locked loop, comprising:

• a voltage controlled oscillator (VCO) configured to receive a VCO tuning signal and comprising a plurality of fine tuning devices;
• an analog overflow and underflow detector configured to determine whether the VCO tuning signal is above or below an analog voltage range;
• a fine tuning counter circuit configured to generate a fine tuning signal;
• and
• wherein, when it is determined by the analog overflow and underflow detector that the VCO tuning signal is above the analog voltage range, a first fine tuning device is selected by the fine tuning signal from the plurality of fine tuning devices to increase a frequency of a VCO output signal to a level within a higher first frequency range,
• wherein, when it is determined by the analog overflow and underflow detector that the VCO tuning signal is below the analog voltage range, a second fine tuning device is selected by the fine tuning signal from the plurality of fine tuning devices to decrease the frequency of the VCO output signal to a level within a lower first frequency range.