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Research on Design of Weak Current Measurement System Based on I-V Convertor

Zicheng Guo, Guofu Liu, Shilin Wu, Mao Li
2017 Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017)   unpublished

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In this paper, after introducing several methods of measuring weak current, a weak current measurement system is designed which consists of an ultra-low bias current operation amplifier ADA4530 based on the trans-impedance amplifier topology, a secondary amplifier, an eight-order Butterworth low-pass switched-capacitor filter and other modules. Special consideration on the low noise pre-amplifier in practical applications has been proposed particularly. The simulation results of noise
more » ... stics have shown that the system can realize the weak current measurement of μA~pA wide range.
doi:10.2991/msmee-17.2017.159 fatcat:vkamgutypnbdxol3rjvm55p6mu
Citation

Zicheng Guo, Guofu Liu, Shilin Wu, Mao Li. "Research on Design of Weak Current Measurement System Based on I-V Convertor." Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017) (2017)