Patent ID: 6940629
Filing Date: 2005-09-06
Classification: G02B

Abstract:
1. A MEMS driver, comprising: a programmable current source, the programmable current source generating an output current for a programmable time; and an integrator coupled to receive the output current from the programmable current source, the integrator providing a voltage which can be coupled to a drive electrode of a MEMS structure, wherein the programmable current source comprises; a counter coupled to receive one or more bits representing the programmable time, the counter generating an active count signal during the programmable time; a reference current source coupled to the counter to receive the active count signal, the reference current source generating a reference current while receiving the active count signal; an output stage coupled to the reference current source to receive the reference current, the output stage generating the output proportional to the reference current; and a first data storage element coupled to receive a bit representing a programmable direction, the first data storage element storing the bit representing the programmable direction, the reference current source being coupled to the first data storage element to receive the bit representing the programmable direction, the reference current source generating the reference current through a path determined by the programmable direction.