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

DOI

10.2991/msmee-17.2017.159How to use a DOI?

Keywords

Weak current, trans-impedance amplifier, noise characteristics, leakage current.

Abstract

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 characteristics have shown that the system can realize the weak current measurement of A~pA wide range.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zicheng Guo
AU  - Guofu Liu
AU  - Shilin Wu
AU  - Mao Li
PY  - 2017/05
DA  - 2017/05
TI  - Research on Design of Weak Current Measurement System Based on I-V Convertor
BT  - Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017)
PB  - Atlantis Press
SP  - 812
EP  - 817
SN  - 2352-5401
UR  - https://doi.org/10.2991/msmee-17.2017.159
DO  - 10.2991/msmee-17.2017.159
ID  - Guo2017/05
ER  -