Spark current cancellation in charge pump of high speed phase lock loop circuit

A method, comprising:

• providing a phase lock loop circuit comprising a voltage controlled oscillator, a phase comparator, and a charge pump circuit, wherein the charge pump circuit comprises a current source, a first field effect transistor (FET), a second field effect transistor (FET) and a first capacitor, wherein the first FET is electrically coupled to the second FET, wherein the first capacitor is electrically coupled to the second FET, wherein the current source is directly connected to a source on the first FET, wherein the current source is coupled between the source on the first FET and ground, and wherein the second FET comprises a parasitic capacitance;
• providing by the voltage controlled oscillator, a first signal comprising a first frequency;
• comparing by the phase comparator, the first signal comprising the first frequency to a reference signal comprising a reference frequency;
• providing by the phase comparator, a control signal representing a phase difference between the first signal and the reference signal;
• receiving by the charge pump circuit, the control signal;
• controlling by the charge pump circuit, the voltage controlled oscillator such that a phase of the first signal is about equal to a phase of the reference signal;
• discharging by the current source, the first capacitor through the first FET;
• operating the second FET such that a spark current resulting from a switching mode of the control signal is directed through the parasitic capacitance to ground, and operating the second FET in a saturation mode.