Publication detail

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

TOMÍČEK, P. LEVEK, V.

Original Title

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

Type

conference paper

Language

English

Original 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 the whole input voltage range of A/D converters. Experimental version achieved full-scale input voltage range from ±15 V to ±15 mV with measured input voltage noise of 0,17 ppm to 0,73 ppm of full-scale range. 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

Authors

TOMÍČEK, P.; LEVEK, V.

Released

26. 4. 2022

Publisher

Brno University of Technology, Faculty of Electrical Engineering and Communication

Location

Brno

ISBN

978-80-214-6030-0

Book

Proceedings II of the 28th Conference STUDENT EEICT 2022 Selected Papers

Edition

1

Pages from

148

Pages to

151

Pages count

4

URL

https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2022_sbornik_2_v3.pdf

BibTex

@inproceedings{BUT180344,
  author="Pavel {Tomíček} and Vladimír {Levek}",
  title="Low noise DC amplifier with selectable gain
and auto-zero functionality for use with
modern integrated A/D converters",
  booktitle="Proceedings II of the 28th Conference STUDENT EEICT 2022 Selected Papers",
  year="2022",
  series="1",
  pages="148--151",
  publisher="Brno University of Technology, Faculty of Electrical Engineering and Communication",
  address="Brno",
  doi="10.13164/eeict.2022.148",
  isbn="978-80-214-6030-0",
  url="https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2022_sbornik_2_v3.pdf"
}