03-03-2011, 11:53 PM
Radiation hardening
It is a method used for the purpose of designing and testing electronic components and systems to make them resistant to the effects of the ionizing radiation (particle radiation and high-energy electromagnetic radiation) which would be encountered in the situations like that of outer space, nuclear reactors, high altitude flight etc. Most of the radiation hardened chips would be the same as the commercial equivalents but including some design variation used for reducing their susceptibility for electromagnetic radiation. The radiation hardened chips tends to lag behind the latest developments because extensive development and testing is required to produce a radiation-tolerant design.
Problems caused by radiation
electronic noise and signal spikes are created when the high velocity ionizing radiation knocks out thousands of electrons. inaccurate or unintelligible signals maybe produced in the case of digital circuits.
Radiation-hardening techniques
insulating substrates are used instead of the usual semiconductor wafers in the hardened chips. normal commercial-grade chips radiation hardened, rewritable, non-volatile conductor memory is provided by the Magnetoresistive RAM
get the details here:
http://en.wikipediawiki/Radiation_hardening
http://scribddoc/41272330/Total-Dose-Radiation-Hardness-Assurance
http://honeywellsites/portal?smap=aerospace&page=Radiation-Hardened-Electronics3&theme=T6&catID=C815147E4-8786-29FE-49EB-C21C8790AA99&id=H0166BA51-5344-E57E-5C37-C6333EA43F61&sel=1
It is a method used for the purpose of designing and testing electronic components and systems to make them resistant to the effects of the ionizing radiation (particle radiation and high-energy electromagnetic radiation) which would be encountered in the situations like that of outer space, nuclear reactors, high altitude flight etc. Most of the radiation hardened chips would be the same as the commercial equivalents but including some design variation used for reducing their susceptibility for electromagnetic radiation. The radiation hardened chips tends to lag behind the latest developments because extensive development and testing is required to produce a radiation-tolerant design.
Problems caused by radiation
electronic noise and signal spikes are created when the high velocity ionizing radiation knocks out thousands of electrons. inaccurate or unintelligible signals maybe produced in the case of digital circuits.
Radiation-hardening techniques
insulating substrates are used instead of the usual semiconductor wafers in the hardened chips. normal commercial-grade chips radiation hardened, rewritable, non-volatile conductor memory is provided by the Magnetoresistive RAM
get the details here:
http://en.wikipediawiki/Radiation_hardening
http://scribddoc/41272330/Total-Dose-Radiation-Hardness-Assurance
http://honeywellsites/portal?smap=aerospace&page=Radiation-Hardened-Electronics3&theme=T6&catID=C815147E4-8786-29FE-49EB-C21C8790AA99&id=H0166BA51-5344-E57E-5C37-C6333EA43F61&sel=1
