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dc.date.accessioned 2023-08-18T16:35:43Z
dc.date.available 2023-08-18T16:35:43Z
dc.date.issued 2022
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/156595
dc.description.abstract Objective: Fully differential topologies are wellsuited for biopotential amplifiers, mainly for single-supply battery-powered circuits such as portable wearable devices where a reduced number of parts is desired. A novel fully differential biopotential amplifier is proposed with the goal of providing electrode offset rejection, bandwidth limitation, and a temporal response compliant with biomedical standards with only a single commercial quad operational amplifier (OA) integrated circuit. Methods: A novel compensation strategy was used to provide a transfer function with only one zero at the origin, which makes it easy to comply with the transient response imposed by biomedical standards. A topology with no grounded components was leveraged to obtain a common-mode rejection ratio (CMRR) ideally infinite and independent of components mismatches. Results: Design equations are presented and, as an example, an electrocardiogram (ECG) amplifier was built and tested. It features a CMRR of 102 dB at 50 Hz, 55 dB gain that supports DC input voltages up to ±300 mV when powered from a 0 V to 5 V single-supply voltage, and a cutoff frequency of less than 0.05 Hz with a first order response. Conclusion: A fully-differential biopotential front-end was designed and validated through experimental tests, demonstrating proper operation with only 4 OAs. Significance: The amplifier is intended for board-level design solutions, it can be built with off-the-shelf components that can be selected according to specific needs, such as reduced power consumption, low noise, or proper operation from a low-voltage power source. en
dc.language en es
dc.subject Biopotential measurement es
dc.subject fully-differential amplifier es
dc.subject low cost design es
dc.title A fully-differential biopotential amplifier with a reduced number of parts en
dc.type Articulo es
sedici.identifier.other https://doi.org/10.1109/TIM.2022.3220284 es
sedici.creator.person Spinelli, Enrique Mario es
sedici.creator.person García, Pablo Andrés es
sedici.creator.person Guerrero, Federico Nicolás es
sedici.creator.person Catacora, Valentín Andrés es
sedici.creator.person Haberman, Marcelo Alejandro es
sedici.subject.materias Ingeniería Electrónica es
sedici.description.fulltext true es
mods.originInfo.place Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle IEEE Transactions on Instrumentation and Measurement es
sedici.relation.journalVolumeAndIssue vol. 71 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)