Very-low frequency capacitively coupled AC amplifier with a current feedback operational amplifier
| dc.contributor.author | Beloso Legarra, Javier | |
| dc.contributor.author | Cruz Blas, Carlos Aristóteles de la | |
| dc.contributor.author | Carlosena García, Alfonso | |
| dc.contributor.author | Martincorena Arraiza, Maite | |
| dc.contributor.department | Ingeniería Eléctrica, Electrónica y de Comunicación | es_ES |
| dc.contributor.department | Institute of Smart Cities - ISC | en |
| dc.contributor.department | Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren | eu |
| dc.contributor.funder | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa | es |
| dc.date.accessioned | 2023-08-11T13:51:52Z | |
| dc.date.available | 2023-08-11T13:51:52Z | |
| dc.date.issued | 2023 | |
| dc.date.updated | 2023-08-11T13:37:31Z | |
| dc.description.abstract | In this paper, we propose the idea of using transimpedance amplifiers, in lieu of operational amplifiers (OAs) or transconductance amplifiers (OTAs) to design capacitively coupled AC amplifiers. The idea is demonstrated with a current feedback operational amplifier (CFOA) as an active element, which is actually an architecture consisting of voltage buffers and current copiers (mirrors). This last characteristic is further exploited to make the corner frequency of the AC amplifier tunable by means of bootstrapping low-valued resistors with the output buffer. It is particularly suited to achieve very-low corner frequencies as needed in applications such as bio- or seismic signals. The idea is demonstrated with simulations and experimental results with a discrete implementation. | en |
| dc.description.sponsorship | This work has been supported by theSpanish Research Agency, under grantAEI/FEDER PID2019-107258RB-C32, andby the Spanish Research Agency and theEU/PTR Next Generation Funds, undergrant TED2021-131052B-C21, AgenciaEstatal de Investigaci on, Ministerio deCiencia e Innovaci on, Open accessfunding provided by Universidad Públicade Navarra. | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Beloso-Legarra, J., De La Cruz-Blas, C. A., Carlosena, A., Martincorena-Arraiza, M. (2023) Very-low frequency capacitively coupled AC amplifier with a current feedback operational amplifier. International Journal of Circuit Theory and Applications, 1-14. https://doi.org/10.1002/cta.3620. | en |
| dc.identifier.doi | 10.1002/cta.3620 | |
| dc.identifier.issn | 0098-9886 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/45948 | |
| dc.language.iso | eng | en |
| dc.publisher | Wiley | en |
| dc.relation.ispartof | International Journal of Circuit Theory and Applications 2023, cta.3620 | en |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107258RB-C32/ES/ | |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI//TED2021-131052B-C21/ | |
| dc.relation.publisherversion | https://doi.org/10.1002/cta.3620 | |
| dc.rights | © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.subject | AC coupled amplifier | en |
| dc.subject | Bootstrapping | en |
| dc.subject | CFOA | en |
| dc.subject | Low frequency | en |
| dc.title | Very-low frequency capacitively coupled AC amplifier with a current feedback operational amplifier | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
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