Electrometer calibration with sub-part-per-million uncertainty
We performed calibrations of four different commercial picoammeters using the Ultrastable Low-noise Current Amplifier (ULCA) as a calibrator current source operated in the range between 1 femtoA and 1 microA. The results allow the comprehensive characterization of the devices under test regarding no...
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Published in | arXiv.org |
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Main Authors | , , , , |
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Cornell University Library, arXiv.org
27.08.2018
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Abstract | We performed calibrations of four different commercial picoammeters using the Ultrastable Low-noise Current Amplifier (ULCA) as a calibrator current source operated in the range between 1 femtoA and 1 microA. The results allow the comprehensive characterization of the devices under test regarding noise, settling and burden voltage behavior as well as stability of the gain factor, and confirm the superior performance of the ULCA for use as small-current calibrator standard. Also, we present a further advanced setup for the calibration of transimpedance amplifiers. Accuracy limits for best electrometer calibrations in the current range between 1 femtoA and 1 microA and possible implications on corresponding calibration and measurement capabilities are discussed. |
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AbstractList | We performed calibrations of four different commercial picoammeters using the Ultrastable Low-noise Current Amplifier (ULCA) as a calibrator current source operated in the range between 1 femtoA and 1 microA. The results allow the comprehensive characterization of the devices under test regarding noise, settling and burden voltage behavior as well as stability of the gain factor, and confirm the superior performance of the ULCA for use as small-current calibrator standard. Also, we present a further advanced setup for the calibration of transimpedance amplifiers. Accuracy limits for best electrometer calibrations in the current range between 1 femtoA and 1 microA and possible implications on corresponding calibration and measurement capabilities are discussed. |
Author | Drung, Dietmar Krause, Christian Becker, Ulrich Scherer, Hansjörg Götz, Martin |
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