a phase-frequency detector having a reference input and a feedback input, for determining phase differences between the reference input and the feedback input;

a loop filter for generating a control voltage;

a charge pump, controlled by the phase-frequency detector, for charging and discharging the loop filter to adjust the control voltage;

a voltage-controlled oscillator (VCO) generating multi-phase output clocks having an output frequency controlled by the control voltage from the loop filter;

an analog divider, receiving at least two of the multi-phase output clocks from the VCO, and generating a divided analog feedback clock having a feedback frequency that is the output frequency divided by a positive power of two;

a clock buffer, receiving the divided analog feedback clock, for generating a digital feedback clock;

a feedback digital divider, receiving the digital feedback clock, for generating a final feedback clock having a final feedback frequency that is the feedback frequency divided by a positive power of two; and

a feedback flip-flop, receiving the final feedback clock and clocked by the digital feedback clock, for generating a phase-aligned feedback clock to the feedback input of the phase-frequency detector;

whereby the analog divider and digital divider are in a feedback path.