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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Bibliographic Details
Published inarXiv.org
Main Authors Scherer, Hansjörg, Drung, Dietmar, Krause, Christian, Götz, Martin, Becker, Ulrich
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 27.08.2018
Subjects
Calibration
Current amplifiers
Current sources
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Summary: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.
ISSN:2331-8422