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Proceedings Paper

Design and testing considerations for high-speed (>10MHz) high-resolution (14 bits) high-performance video signal chains for advanced visible and infrared focal plane applications
Author(s): Ralph M. Shima; Terrence S. Lomheim
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Paper Abstract

Advanced panchromatic, multispectral, and hyperspectral imaging applications from the visible through the longwave IR, are pushing image sensor to higher line and frame rates, wider fields-of-view, and high spatial and spectral resolution. When implemented with realistic focal plane architectures, the resulting multiple parallel output video streams must operate at high pixel data rates and with excellent amplitude resolution. The video signal chains necessary to process and digitally encode the raw pixel video must operate at very high speed, with low noise and wide pixel dynamic range. We discuss issues and constraints associated with advanced video signal chain circuit board design, including methods to improve settling times, electrical crosstalk, and the implementation of grounding approaches needed to ensure low noise. We describe the design and fabrication of a one-channel prototype signal chain board designed to operate at 14-bits and 20 MHz. In addition, we discuss video signal chain testing and verification constraints and report on noise, step response and differential nonlinearity measurements made on our prototype signal chain board.

Paper Details

Date Published: 8 February 2002
PDF: 16 pages
Proc. SPIE 4486, Infrared Spaceborne Remote Sensing IX, (8 February 2002); doi: 10.1117/12.455110
Show Author Affiliations
Ralph M. Shima, The Aerospace Corp. (United States)
Terrence S. Lomheim, The Aerospace Corp. (United States)

Published in SPIE Proceedings Vol. 4486:
Infrared Spaceborne Remote Sensing IX
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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