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Vol. 32, No. 8(2), S&M2292

ISSN (print) 0914-4935
ISSN (online) 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 25, Number 8 (2013)
Copyright(C) MYU K.K.
pp. 553-565
S&M948 Research Paper
https://doi.org/10.18494/SAM.2013.886
Published: October 28, 2013

Design of an Analog Front End for a Bio-Inspired Auditory Sensor of a Novel Totally Implantable Cochlear Implant [PDF]

Jeong Hoan Park, Jin Ho Kim, Yoon-Kyu Song, Youngdo Jung, Shin Hur, Wandoo Kim and Sung June Kim

(Received December 17, 2012; Accepted April 12, 2013)

Keywords: cochlear implant, totally implantable cochlear implant, artificial basilar membrane, piezoelectric sensor, low-noise low-power analog front end, biosensor

In this paper, we present a low-power and low-noise analog front end for a totally implantable cochlear implant using a bio-inspired auditory sensor. We used the “gm of ID” method to design an analog front end as the interface to an artificial basilar membrane with reduced flicker and thermal noises and low power consumption. We fabricated an Application-Specific Integrated Circuit (ASIC) chip with an analog front end using a 0.35 µm high-voltage CMOS process, showing a measured gain range of 40.35–62.94 dB with an input-referred noise of 5.32 μVrms at a power consumption of 272 μW per channel. As proof of concept demonstration, we used an analog front end with an artificial basilar membrane sensor, exhibiting an audio signal transduction suitable for a biomimetic artificial cochlear implant.

Corresponding author: Yoon-Kyu Song, Sung June Kim


Cite this article
Jeong Hoan Park, Jin Ho Kim, Yoon-Kyu Song, Youngdo Jung, Shin Hur, Wandoo Kim and Sung June Kim, Design of an Analog Front End for a Bio-Inspired Auditory Sensor of a Novel Totally Implantable Cochlear Implant, Sens. Mater., Vol. 25, No. 8, 2013, p. 553-565.



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