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Authors: Caterina Carboni ; Daniela Loi and Massimo Barbaro

Affiliation: University of Cagliari, Italy

Keyword(s): Neural signal recording, Low noise amplifier.

Related Ontology Subjects/Areas/Topics: Artificial Limbs ; Biomedical Engineering ; Biomedical Instrumentation ; Biomedical Instruments and Devices ; Brain-Computer Interfaces ; Devices ; Human-Computer Interaction ; Implantable Electronics ; Low-Power Design ; Microelectronics ; Physiological Computing Systems

Abstract: A new device for peripheral neural signals recording is presented. The designed system is composed by an analog and a digital part. The analog part, to be integrated on an implantable CMOS chip, is kept as simple as possible and hosts a low noise first order pre- amplifier/pre-filtering stage that provides a 46dB gain in the bandwidth 800Hz􀀀7:2kHz and a 16-bit 3rd order sigma delta modulator. A highly selective band-pass filter is implemented into the digital domain, incorporated in the decimator block of the sigma-delta converter; in this way it is possible to reduce total area (which is 0:4mm2 for a single input channel) and power consumption (250μW, single channel) in the integrated, implantable module. Simulation results prove the capability of the proposed system to record signals whose magnitude is in the order of tens of microvolts thanks to the low Input Referred Noise (IRN) of 2:4μVrms of the input stage.

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Paper citation in several formats:
Carboni, C.; Loi, D. and Barbaro, M. (2012). A FRONT-END STAGE FOR NEURAL SIGNAL RECORDING BASED ON A SIGMA-DELTA MODULATOR. In Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2012) - BIODEVICES; ISBN 978-989-8425-91-1; ISSN 2184-4305, SciTePress, pages 207-212. DOI: 10.5220/0003782802070212

@conference{biodevices12,
author={Caterina Carboni. and Daniela Loi. and Massimo Barbaro.},
title={A FRONT-END STAGE FOR NEURAL SIGNAL RECORDING BASED ON A SIGMA-DELTA MODULATOR},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2012) - BIODEVICES},
year={2012},
pages={207-212},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003782802070212},
isbn={978-989-8425-91-1},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2012) - BIODEVICES
TI - A FRONT-END STAGE FOR NEURAL SIGNAL RECORDING BASED ON A SIGMA-DELTA MODULATOR
SN - 978-989-8425-91-1
IS - 2184-4305
AU - Carboni, C.
AU - Loi, D.
AU - Barbaro, M.
PY - 2012
SP - 207
EP - 212
DO - 10.5220/0003782802070212
PB - SciTePress

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