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J. Low Power Electron. Appl. 2014, 4(4), 268-291; doi:10.3390/jlpea4040268

A Survey of Neural Front End Amplifiers and Their Requirements toward Practical Neural Interfaces

Biomedical Microsystems Laboratory, Electrical and Computer Engineering Department, Université Laval, 1065 avenue de la Médecine, Québec (Québec) G1V 0A6, Canada
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Received: 25 August 2014 / Revised: 27 October 2014 / Accepted: 4 November 2014 / Published: 14 November 2014
(This article belongs to the Special Issue Low-Power Biomedical Applications)
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Abstract

When designing an analog front-end for neural interfacing, it is hard to evaluate the interplay of priority features that one must upkeep. Given the competing nature of design requirements for such systems a good understanding of these trade-offs is necessary. Low power, chip size, noise control, gain, temporal resolution and safety are the salient ones. There is a need to expose theses critical features for high performance neural amplifiers as the density and performance needs of these systems increases. This review revisits the basic science behind the engineering problem of extracting neural signal from living tissue. A summary of architectures and topologies is then presented and illustrated through a rich set of examples based on the literature. A survey of existing systems is presented for comparison based on prevailing performance metrics. View Full-Text
Keywords: neural recording; analog front-end; neural amplifier; low-noise; review neural recording; analog front-end; neural amplifier; low-noise; review
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bharucha, E.; Sepehrian, H.; Gosselin, B. A Survey of Neural Front End Amplifiers and Their Requirements toward Practical Neural Interfaces. J. Low Power Electron. Appl. 2014, 4, 268-291.

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