Patent ID: 8669816

Claim:
An integrated circuit device comprising: at least one controllable oscillator comprising a first control port and at least one further control port; at least one frequency control module comprising an output that is operably coupled to the first control port of the at least one controllable oscillator and arranged to provide a frequency control signal thereto; and at least one compensation module comprising an output that is operably coupled with the at least one further control port of the at least one controllable oscillator and arranged to provide at least one compensation signal thereto, wherein the at least one compensation module comprises an integrator component arranged to receive at an input thereof a signal that is representative of a difference between an indication of the frequency control signal and a reference signal, and to output an integrated difference signal; the at least one compensation module is arranged to generate the at least one compensation signal based at least partly on the integrated difference signal output by the integrator component; and the integrator component is a digital integrator.