Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/57540
Título
Programmable gain amplifiers with DC suppression and low output offset for bioelectric sensors
Año del Documento
2013
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Sensors, 2013, vol. 13, n. 10, p. 13123-13142
Résumé
DC-offset and DC-suppression are key parameters in bioelectric amplifiers. However, specific DC analyses are not often explained. Several factors influence the DC-budget: the programmable gain, the programmable cut-off frequencies for high pass filtering and, the low cut-off values and the capacitor blocking issues involved. A new intermediate stage is proposed to address the DC problem entirely. Two implementations were tested. The stage is composed of a programmable gain amplifier (PGA) with DC-rejection and low output offset. Cut-off frequencies are selectable and values from 0.016 to 31.83 Hz were tested, and the capacitor deblocking is embedded in the design. Hence, this PGA delivers most of the required gain with constant low output offset, notwithstanding the gain or cut-off frequency selected.
Materias Unesco
33 Ciencias Tecnológicas
Palabras Clave
Bioelectric sensors
Biomedical electronics
Amplifiers
High-pass filters
Revisión por pares
SI
Version del Editor
Propietario de los Derechos
© 2013 The Author(s)
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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