Analog Vlsi Subaperture Centroid Circuits
نویسندگان
چکیده
We detail the design, simulation, layout, and testing of four analog VLSI subaperture centroid circuits for use in an adaptive optics system. Each centroid circuit consists of four large photo-transducers arranged in a 2 x 2 array and two current di erencing circuits. The di erencing circuits compute the location of the image centroid relative to the center of the array in the xand y-directions. The total size of each centroid circuit is 160 m x 160 m in a standard 1.2m CMOS process.
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