A phase locked loop - hereafter abbreviated PLL - device comprising: a digital to analog converter - hereafter abbreviated DAC - means for converting a digital input signal to an analog current signal and comprising a current source output stage means for sourcing the analog current signal; an analog integrator means for integrating the analog current signal to generate a voltage control signal for controlling a voltage controlled oscillator - hereafter abbreviated VCO - means; a digital differentiator means for digitally differentiating a digital loop signal to at least partially compensate for the integration of the analog current signal by the analog integrator means, the digital input signal being based on the differentiated digital loop signal; a digital phase detector means (302, 620) for detecting a phase difference between a reference signal and a feedback signal to provide a digital correction signal, the digital loop signal being based on the digital correction signal; the VCO means connected to the analog integrator means and for generating an analog output signal in accordance with the voltage control signal; and a feedback means connected to the VCO means for feeding back the feedback signal based on the analog output signal, characterised in that the feedback means comprises: a time to digital converter - hereafter abbreviated TDC - means for converting the analog output signal to a digital fractional phase signal; and a phase accumulator means for accumulating phase of the analog output signal to generate an integer phase signal, the feedback signal based on a combination of the integer phase signal and the digital fractional phase signal. a digital to analog converter - hereafter abbreviated DAC - means for converting a digital input signal to an analog current signal and comprising a current source output stage means for sourcing the analog current signal; an analog integrator means for integrating the analog current signal to generate a voltage control signal for controlling a voltage controlled oscillator - hereafter abbreviated VCO - means; a digital differentiator means for digitally differentiating a digital loop signal to at least partially compensate for the integration of the analog current signal by the analog integrator means, the digital input signal being based on the differentiated digital loop signal; a digital phase detector means (302, 620) for detecting a phase difference between a reference signal and a feedback signal to provide a digital correction signal, the digital loop signal being based on the digital correction signal; the VCO means connected to the analog integrator means and for generating an analog output signal in accordance with the voltage control signal; and a feedback means connected to the VCO means for feeding back the feedback signal based on the analog output signal, characterised in that the feedback means comprises: a time to digital converter - hereafter abbreviated TDC - means for converting the analog output signal to a digital fractional phase signal; and a phase accumulator means for accumulating phase of the analog output signal to generate an integer phase signal, the feedback signal based on a combination of the integer phase signal and the digital fractional phase signal. a time to digital converter - hereafter abbreviated TDC - means for converting the analog output signal to a digital fractional phase signal; and a phase accumulator means for accumulating phase of the analog output signal to generate an integer phase signal, the feedback signal based on a combination of the integer phase signal and the digital fractional phase signal.