Home > Conference materials > Papers > Low noise DC amplifier with selectable gain and auto-zero functionality for use with modern integrated A/D converters
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