Patent ID: 6549155
Filing Date: 2003-04-15
Classification: H03M

Abstract:
An analog micromirror apparatus comprising:a digital controller generating a digital control command; a coarse digital to analog converter (DAC) having an input coupled to the digital controller and having a coarse DAC output; a filter coupled to the coarse DAC output, and; a switch disposed between the coarse DAC and the filter, wherein the switch has a first input coupled to the coarse DAC and an output coupled to the filter; a fine DAC having an input coupled to the digital controller and having a fine DAC output; a summing amplifier coupled to the outputs of the coarse DAC and the fine DAC, and having a summed analog output, the summed output representative of the digital control command; and a driver element for orienting a mirror element, the driver element coupled to the analog output of the summing amplifier.