A radiation-hard, low-background multiplexer design for spacecraft imager applications

Details A radiation-hard, low-background multiplexer design for spacecraft imager applications A radiation-hard, low-background multiplexer design for spacecraft imager applications

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1684..175s&link_type=abstract

In: Infrared readout electronics; Proceedings of the Meeting, Orlando, FL, Apr. 21, 22, 1992 (A93-53076 23-33), p. 175-181.

Computer Science

1

Design Analysis, Durability, Infrared Imagery, Multiplexing, Requirements, Background Noise, Capacitors, Current Amplifiers, Photodiodes

Scientific paper

A possible multiplexer design for the focal plane for the Cassini Visible and Infrared Mapping Spectrometer (VIMS) is reviewed. The instrument's requirements for the multiplexed array are summarized. The VIMS instrument has a modest radiation-hardness requirement due to the trajectory and planetary environments in which the instrument will be required to operate. The total ionizing dose hardness requirement is a few tens of kilorads. A thin-gate oxide of a few hundred angstroms thickness is to be used. Field hardness is to be achieved by guard bands or hardened dielectric isolation. The design is argued to meet the low-noise and radiation-hardness required for imaging at Saturn. The design is versatile enough to provide double-correlated and double-uncorrelated sampling, which is accomplished in the signal processing electronics outside the focal plane.

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