Original title: Low noise DC amplifier with selectable gain and auto-zero functionality for use with modern integrated A/D converters
Authors: Tomíček, Pavel ; Levek, Vladimír
Document type: Papers
Language: eng
Publisher: Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií
Abstract: This paper presents the design and noise measurements of amplifier suitable for use with modern integrated A/D converters. Proposed topology is capable of both amplifying and attenuating its input signal to utilize whole input voltage range of A/D converters. Experimental version achieved full scale input voltage range from ±15 V to ±15 mV. Suppression of offset error associated with amplifier and A/D converter systems is realized using auto-zero scheme. Resulting amplifier used in conjunction with digital filters can achieve more than 20 noise free bits on all gain settings.
Keywords: low noise, DC amplifier, selectable gain, auto-calibration, A/D converter
Host item entry: Proceedings II of the 28st Conference STUDENT EEICT 2022: Selected papers, ISBN 978-80-214-6030-0

Institution: Brno University of Technology (web)
Document availability information: Fulltext is available in the Brno University of Technology Digital Library.
Original record: http://hdl.handle.net/11012/208624

Permalink: http://www.nusl.cz/ntk/nusl-511893


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Universities and colleges > Public universities > Brno University of Technology
Conference materials > Papers