Instrumentation amplifiers and voltage controlled current sources have been designed by using single operational amplifiers (OPA124, TLE2071 and OPA627). Their performance has been evaluated in the laboratory and under neutron radiation. On line measurements of the offset voltages, offset currents, closed loop gain, CMRR and bias currents were performed on the amplifiers. The current sources were set to a constant value and the current was monitored on-line. The radiation tolerance of commercial voltage references has also been investigated.ududThe radiation was performed out in ITN (Portugal) research nuclear reactor. In comparison to previous experimental campaigns the gamma radiation has been reduced by a factor 15 for a given neutron dose. This is achieved thanks to a recently constructed facility for neutron beam extraction
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机译：仪表放大器和压控电流源已通过使用单个运算放大器（OPA124，TLE2071和OPA627）进行设计。它们的性能已经在实验室和中子辐射下进行了评估。在线测量放大器的失调电压，失调电流，闭环增益，CMRR和偏置电流。电流源设置为恒定值，并且在线监测电流。还对商用电压基准的辐射耐受性进行了研究。 ud ud辐射是在ITN（葡萄牙）研究型核反应堆中进行的。与先前的实验活动相比，对于给定的中子剂量，γ辐射已减小了15倍。这要归功于最近建造的中子束提取设备
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