Patent ID: 7535977

Claim:
A phase lock loop device comprising: a phase frequency detector to receive a reference signal and a feedback signal, the phase frequency detector to output first and second signals based on a comparison of the reference signal and the feedback signal in a locked condition of the phase lock loop device; a charge pump to output a charge based on the first and second output signals from the phase frequency detector; a voltage controlled oscillator to output a clock signal based on the received charge from the charge pump, wherein the charge pump comprises, at least one first current source coupled to the charge pump to increase a frequency of the clock signal, and at least one second current source coupled to the charge pump to decrease a frequency of the clock signal, said at least one first current source to apply a fixed amount of current and said at least one second current source to apply variable amount of current or said at least one second current source to apply the variable amount of current and said at least one first current source to apply the fixed amount of current.