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Proceedings Paper

Orion II: the second-generation readout multiplexer for the largest infrared hybrid focal plane
Author(s): Kenneth Michael Merrill; Albert M. Fowler; William Ball; Arne Henden; Fred J. Vrba; Craig R. McCreight
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Paper Abstract

The Orion program developed a 2048x2048 infrared focal plane using InSb PV diodes for detectors. Several of these focal planes have been produced. However, the yield of the original readout multiplexer was not up to expectations owing to unanticipated shorts in the fabrication process. Since these shorts occurred at the metal 1-metal 2 crossover points and there are over 9 million such crossovers, the design had to be modified to work around these problems. Thus the Orion II readout was developed. The work is being done at the Raytheon Vision Systems (RVS) division (most recently Raytheon Infrared Operations, but better known as SBRC) by many of the same people who created the Orion I and ALADDIN focal planes. The design is very similar to the Orion I design with the addition of circuitry to work around the effect of the metal 1-metal 2 shorts. In this paper we will discuss the unique design features of this device as well as present test data taken from the new devices.

Paper Details

Date Published: 12 January 2004
PDF: 8 pages
Proc. SPIE 5167, Focal Plane Arrays for Space Telescopes, (12 January 2004); doi: 10.1117/12.508596
Show Author Affiliations
Kenneth Michael Merrill, National Optical Astronomy Observatory (United States)
Albert M. Fowler, National Optical Astronomy Observatory (United States)
William Ball, National Optical Astronomy Observatory (United States)
Arne Henden, U. S. Naval Observatory (United States)
Fred J. Vrba, U. S. Naval Observatory (United States)
Craig R. McCreight, NASA Ames Research Ctr. (United States)

Published in SPIE Proceedings Vol. 5167:
Focal Plane Arrays for Space Telescopes
Thomas J. Grycewicz; Craig R. McCreight, Editor(s)

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