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A Low-Noise and Quasi-Ideal DC Current Source Dedicated to Four-Probe Low-Frequency Noise Measurements

Abstract : In this paper, a DC current source dedicated to four-probe low frequency noise measurements is presented. An output impedance value of 3 M with a maximum output current of 1.5 mA was achieved. The white noise level of the current source was measured to be 410-23 A 2 •Hz-1 with a corner frequency of 30 Hz. Thanks to its quasi-ideal behavior in terms of noise level and high output impedance value, this current source can be used to measure the intrinsic noise of materials using four-point measurements without any experimental or analytical corrections.
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https://hal.archives-ouvertes.fr/hal-02273188
Contributor : Laurence Méchin <>
Submitted on : Monday, January 4, 2021 - 12:51:58 PM
Last modification on : Tuesday, January 5, 2021 - 1:51:14 PM
Long-term archiving on: : Monday, April 5, 2021 - 8:00:40 PM

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Jean-Marc Routoure, Sheng Wu, Carlo Barone, Laurence Méchin, Bruno Guillet. A Low-Noise and Quasi-Ideal DC Current Source Dedicated to Four-Probe Low-Frequency Noise Measurements. IEEE Transactions on Instrumentation and Measurement, Institute of Electrical and Electronics Engineers, 2020, 69 (1), pp.194. ⟨10.1109/TIM.2019.2890891⟩. ⟨hal-02273188⟩

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