Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach

This work proposes a Double Differential (DD) amplifier topology which exploits the advantages of the current-mode approach. DD amplifiers are useful as front-ends in standalone active electrodes for superficial electromyography (sEMG) wearable applications and electroneurography (ENG) measurement d...

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Autores principales: Guerrero, Federico Nicolás, Spinelli, Enrique Mario, Grasso, Alfio Dario, Palumbo, Gaetano
Formato: Articulo
Lenguaje:Inglés
Publicado: 2022
Materias:
Ingeniería
Informática
active electrode
amplifier
biopotential instrumentation
current conveyor
double-differential
electromyography
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/156863
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-156863
record_format dspace
spelling I19-R120-10915-1568632023-08-26T04:09:01Z http://sedici.unlp.edu.ar/handle/10915/156863 Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach Guerrero, Federico Nicolás Spinelli, Enrique Mario Grasso, Alfio Dario Palumbo, Gaetano 2022 2023-08-25T13:18:45Z en Ingeniería Informática active electrode amplifier biopotential instrumentation current conveyor double-differential electromyography This work proposes a Double Differential (DD) amplifier topology which exploits the advantages of the current-mode approach. DD amplifiers are useful as front-ends in standalone active electrodes for superficial electromyography (sEMG) wearable applications and electroneurography (ENG) measurement devices. Front-ends for these applications need to attain low noise, high common-mode rejection ratio, and high input impedance to measure biopotential signals and can further benefit from low power operation, a small size, and an easily adaptable output. Presently published DD amplifiers are either complex in terms of a high part count, leading to higher power consumption and size, or suffer from limited interference-rejection capabilities and require further analog processing for compatibility with single-ended systems. Therefore, in this work, second-generation current conveyors have been leveraged to obtain a simple topology combining a small active-part count, a high common-mode rejection ratio, and a flexible output stage. The current-mode DD amplifier is presented and analyzed in detail to estimate its parameters and model the effects of nonidealities in the circuit. In order to validate the proposed topology, a discrete-component implementation was realized as a proof-of-concept. The results experimentally demonstrated the properties of the proposed topology and its feasibility for measuring superficial sEMG DD signals. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf 45870-45880
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Informática
active electrode
amplifier
biopotential instrumentation
current conveyor
double-differential
electromyography
spellingShingle Ingeniería
Informática
active electrode
amplifier
biopotential instrumentation
current conveyor
double-differential
electromyography
Guerrero, Federico Nicolás
Spinelli, Enrique Mario
Grasso, Alfio Dario
Palumbo, Gaetano
Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
topic_facet Ingeniería
Informática
active electrode
amplifier
biopotential instrumentation
current conveyor
double-differential
electromyography
description This work proposes a Double Differential (DD) amplifier topology which exploits the advantages of the current-mode approach. DD amplifiers are useful as front-ends in standalone active electrodes for superficial electromyography (sEMG) wearable applications and electroneurography (ENG) measurement devices. Front-ends for these applications need to attain low noise, high common-mode rejection ratio, and high input impedance to measure biopotential signals and can further benefit from low power operation, a small size, and an easily adaptable output. Presently published DD amplifiers are either complex in terms of a high part count, leading to higher power consumption and size, or suffer from limited interference-rejection capabilities and require further analog processing for compatibility with single-ended systems. Therefore, in this work, second-generation current conveyors have been leveraged to obtain a simple topology combining a small active-part count, a high common-mode rejection ratio, and a flexible output stage. The current-mode DD amplifier is presented and analyzed in detail to estimate its parameters and model the effects of nonidealities in the circuit. In order to validate the proposed topology, a discrete-component implementation was realized as a proof-of-concept. The results experimentally demonstrated the properties of the proposed topology and its feasibility for measuring superficial sEMG DD signals.
format Articulo
Articulo
author Guerrero, Federico Nicolás
Spinelli, Enrique Mario
Grasso, Alfio Dario
Palumbo, Gaetano
author_facet Guerrero, Federico Nicolás
Spinelli, Enrique Mario
Grasso, Alfio Dario
Palumbo, Gaetano
author_sort Guerrero, Federico Nicolás
title Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
title_short Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
title_full Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
title_fullStr Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
title_full_unstemmed Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
title_sort double-differential amplifier for semg measurement by means of a current-mode approach
publishDate 2022
url http://sedici.unlp.edu.ar/handle/10915/156863
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