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Degradation of power bipolar operational amplifiers in a mixed neutron and gamma environment



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Franco Peláez, Francisco Javier and Zong, Yi and Agapito Serrano, Juan Andrés (2007) Degradation of power bipolar operational amplifiers in a mixed neutron and gamma environment. IEEE transactions on nuclear science, 54 (4). pp. 982-988. ISSN 0018-9499

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Official URL: http://dx.doi.org/10.1109/TNS.2007.892183


Power operational amplifiers were irradiated in a mixed neutron and gamma radiation environment. These experiments showed that the degradation of the power operational amplifiers shares a great deal of characteristics with that of the low signal devices (e.g., shift of the input offset voltage, increase of the input bias currents, and degradation of the frequency behavior). However, other phenomena were observed without equivalence in the family (linear dependence of the inverse of the quiescent current on the neutron fluence, more significant degradation of the negative output current and collapse of the primary operational amplifiers). These phenomena were explained from the special characteristics of the output stage, optimized to provide a current of several amperes. Finally, even though power devices are especially sensitive to radiation damage, some of the tested devices are suitable for radiation levels on the order of 5 ldr 1013 - 1014 n ldr cm-2 in case the whole electronic system, in which the device is integrated, is carefully designed.

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(c) 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works

Uncontrolled Keywords:Gamma-ray effects; Neutron effects; Power amplifiers; Amplifier degradation; Gamma environment; Neutron environment;power bipolar operational amplifiers;Databases;Degradation;Gamma rays;High power amplifiers;Large Hadron Collider;Neutrons;Operational amplifiers;Power amplifiers;Power supplies;Testing;Bipolar technology;neutron damage;operational amplifiers;power devices;radiation tolerance
Subjects:Sciences > Physics > Electronics
ID Code:28862
Deposited On:02 Mar 2015 10:20
Last Modified:10 Dec 2018 14:58

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