Hardening CMOS imagers: radhard-by-design or radhard-by-foundry

Details Hardening CMOS imagers: radhard-by-design or radhard-by-foundry Hardening CMOS imagers: radhard-by-design or radhard-by-foundry

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5167..101p&link_type=abstract

Focal Plane Arrays for Space Telescopes. Edited by Grycewicz, Thomas J.; McCreight, Craig R. Proceedings of the SPIE, Volume 51

Mathematics

Logic

1

Scientific paper

A comparative study between radhard-by-design and radhard-by-foundry approaches for radiation hardening of CMOS imagers is presented. Main mechanisms for performance degradation in CMOS imagers in a radiation environment are identified, and key differences between the radiation effects in CMOS imagers and that in digital logic circuits are explained. Design methodologies for implementation of CMOS imagers operating in a radiation environment are presented. By summarizing the performance results obtained from imagers implemented in both radhard-by-design and radhard-by-foundry approaches, the advantages and shortcomings of both approaches are identified. It is shown that neither approach presents an optimum solution. The paper concludes by discussing an alternate pathway to overcome these limitations and enable the next-generation high-performance radiation-hard CMOS imagers.

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