Low noise, open-source QEPAS system with instrumentation amplifier

Quartz enhanced photoacoustic spectroscopy (QEPAS) is a rapidly developing, ultrasensitive method for trace gas sensing. Adequate electronic amplifier, well matched to the quartz characteristics is crucial for overall system performance. Here we present an open source circuit for QEPAS signal amplif...

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Detalles Bibliográficos
Autores principales: Winkowski, Mateusz, Stacewicz, Tadeusz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6372579/
https://www.ncbi.nlm.nih.gov/pubmed/30755695
http://dx.doi.org/10.1038/s41598-019-38509-7
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author Winkowski, Mateusz
Stacewicz, Tadeusz
author_facet Winkowski, Mateusz
Stacewicz, Tadeusz
author_sort Winkowski, Mateusz
collection PubMed
description Quartz enhanced photoacoustic spectroscopy (QEPAS) is a rapidly developing, ultrasensitive method for trace gas sensing. Adequate electronic amplifier, well matched to the quartz characteristics is crucial for overall system performance. Here we present an open source circuit for QEPAS signal amplification. It consists of a buffer, instrumentation amplifier and digitally controlled gain stage. An experiment showed, that it offers signal to noise ratio of about 23 dB better than commonly used transimpedance amplifier. The use of this circuit provides opportunity to improve QEPAS sensitivity by about one order of magnitude.
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spelling pubmed-63725792019-02-15 Low noise, open-source QEPAS system with instrumentation amplifier Winkowski, Mateusz Stacewicz, Tadeusz Sci Rep Article Quartz enhanced photoacoustic spectroscopy (QEPAS) is a rapidly developing, ultrasensitive method for trace gas sensing. Adequate electronic amplifier, well matched to the quartz characteristics is crucial for overall system performance. Here we present an open source circuit for QEPAS signal amplification. It consists of a buffer, instrumentation amplifier and digitally controlled gain stage. An experiment showed, that it offers signal to noise ratio of about 23 dB better than commonly used transimpedance amplifier. The use of this circuit provides opportunity to improve QEPAS sensitivity by about one order of magnitude. Nature Publishing Group UK 2019-02-12 /pmc/articles/PMC6372579/ /pubmed/30755695 http://dx.doi.org/10.1038/s41598-019-38509-7 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Winkowski, Mateusz
Stacewicz, Tadeusz
Low noise, open-source QEPAS system with instrumentation amplifier
title Low noise, open-source QEPAS system with instrumentation amplifier
title_full Low noise, open-source QEPAS system with instrumentation amplifier
title_fullStr Low noise, open-source QEPAS system with instrumentation amplifier
title_full_unstemmed Low noise, open-source QEPAS system with instrumentation amplifier
title_short Low noise, open-source QEPAS system with instrumentation amplifier
title_sort low noise, open-source qepas system with instrumentation amplifier
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6372579/
https://www.ncbi.nlm.nih.gov/pubmed/30755695
http://dx.doi.org/10.1038/s41598-019-38509-7
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