Extremely low Power on Focal Plane Digital Conversion

Period of Performance: 12/16/1998 - 08/09/1999

$70K

Phase 1 SBIR

Recipient Firm

Amain Electronics CO.
P.O. Box 5028
West Hills, CA 91307
Principal Investigator

Research Topics

Abstract

As the size and sensitivity of infrared censors increase, the bandwidth to move date off the focal plane increases proportional to the number of pixels in the array. For analog focal planes, increased bandwidth also means increased noise. Off focal plane A./D as well as processing for offset and gain corrcetion also add noise. Power dissipation will also increase with size. The newly developed MOSAD technology places an A/D converter at each pixel, limiting noise vandwidth to temporal bandwidth,independent of array size. The converter requires no more surface area than the old analog detector interface it replaces. Digital at the pixel allows lower switching voltage over analog, reducing power consumption. The readout technology is absolutely linear and has zero offset. Power consuming and mouse limiting analog electronics can be eliminated from the system, improving reliability and decreasing cost. This A/D conversion process can be built with existing semiconductor technology. The technology is also less dependent on device parameters compared to other digital or analog approaches, giving it improved immunity to radiation effects and longer life.BENEFITS: There is a broad range of systems that can be developer with lover cost digital imager including: Safety ( aircraft landing, truck collision avoidance), Surveillance (law enforcement, assembly line) and earth resources ( atmospheric sounders, agricultural).