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Proceedings Paper

Total-dose hardened of a bipolar NPN differential pair
Author(s): Ya-Hong Zhai; Ping Li; Wei Li; Guo-Jun Zhang; Yu-Xiang Luo; Bin Hu; Xue Fan
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Paper Abstract

A radiation-hardened Bipolar NPN differential pair is developed and fabricated in the 4μm 20V process. The total ionizing dose response of the unhardened NPN and hardened NPN are compared. The experimental results indicate that after the radiation total dose of 100krad (Si) the current gain of the unhardened NPN is reduced by about 60%~65%. Under the same radiation condition, the current gain of the hardened NPN is greater 15%~20% than the unhardened NPN. Subsequently, the input offset voltage and current of unhardened and hardened differential pairs are measured before and after the radiation total dose of 100krad (Si).The results show that the standard deviations of hardened differential pairs are much smaller. Theory analysis and experiment shows that the radiation hardness approaches are reasonable and efficient.

Paper Details

Date Published: 16 August 2011
PDF: 6 pages
Proc. SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, 81961B (16 August 2011); doi: 10.1117/12.900652
Show Author Affiliations
Ya-Hong Zhai, Univ. of Electronic Science and Technology of China (China)
Ping Li, Univ. of Electronic Science and Technology of China (China)
Wei Li, Univ. of Electronic Science and Technology of China (China)
Guo-Jun Zhang, Univ. of Electronic Science and Technology of China (China)
Yu-Xiang Luo, Univ. of Electronic Science and Technology of China (China)
Bin Hu, Univ. of Electronic Science and Technology of China (China)
Xue Fan, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 8196:
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

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