In one embodiment, a system includes power management control that controls a duty cycle of a processor to manage power. An N diffusion region, a P diffusion region and an N diffusion region are formed in the surface for the N\u2212 epitaxial layer. The added-up signal, which is dependent on the error matching, controls a VCO which readjusts the operating frequency of the FOG until the correlation tends to zero. The expandable medical device may further include a plurality of ductile hinges formed between the elongated struts, the ductile hinges allowing the cylindrical device to be expanded or compressed from the first diameter to the second diameter by deformation of the ductile hinges.