A method and apparatus for jitter reduction in a Phase Locked Loop that includes determining a size of a original charge pump adequate to generate an appropriate control voltage to a Voltage Controlled Oscillator of a PLL based on the charge pump receiving a single up signal or down signal within one cycle of a PLL input reference clock. The porous valve metal thin film has an integral continuous structure that includes the valve metal, an outside surface, and micropores connected to the outside surface. Optionally, the proximal end of the filter may also be so coated, or the entire filter.