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Stefan cel Mare
University of Suceava
Faculty of Electrical Engineering and
Computer Science
13, Universitatii Street
Suceava - 720229
ROMANIA

Print ISSN: 1582-7445
Online ISSN: 1844-7600
WorldCat: 643243560
doi: 10.4316/AECE


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2017-Jun-14
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  4/2015 - 13

An Electronically Tunable Transconductance Amplifier for Use in Auditory Prostheses

FARAGO, P. See more information about FARAGO, P. on SCOPUS See more information about FARAGO, P. on IEEExplore See more information about FARAGO, P. on Web of Science, FARAGO, C. See more information about  FARAGO, C. on SCOPUS See more information about  FARAGO, C. on SCOPUS See more information about FARAGO, C. on Web of Science, OLTEAN, G. See more information about  OLTEAN, G. on SCOPUS See more information about  OLTEAN, G. on SCOPUS See more information about OLTEAN, G. on Web of Science, HINTEA, S. See more information about HINTEA, S. on SCOPUS See more information about HINTEA, S. on SCOPUS See more information about HINTEA, S. on Web of Science
 
Click to see author's profile on See more information about the author on SCOPUS SCOPUS, See more information about the author on IEEE Xplore IEEE Xplore, See more information about the author on Web of Science Web of Science

Download PDF pdficon (1,464 KB) | Citation | Downloads: 255 | Views: 1,259

Author keywords
analog processing circuits, cochlear implants, low-power electronics, operational transconductance amplifier, programmable circuits

References keywords
cmos(8), circuits(7), amplifier(6), systems(4), signal(4), sarpeshkar(4), processing(4), power(4), farago(4), design(4)
Blue keywords are present in both the references section and the paper title.

About this article
Date of Publication: 2015-11-30
Volume 15, Issue 4, Year 2015, On page(s): 95 - 100
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2015.04013
Web of Science Accession Number: 000368499800012
SCOPUS ID: 84949945758

Abstract
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Low-voltage and low-power trends in analog electronics enable novel features in modern bio-medical devices, such as extensive portability, autonomy and even battery-less operation. One specific example is the cochlear implant (CI), which emulates the physiology of hearing to produce auditory sensations via neural stimulation. Besides low-voltage and low-power operation, a key feature in modern CIs is wide-range programmability of the speech processing parameters. This paper proposes an operational transconductance amplifier (OTA) for use in CIs, with wide-range electronic tuning of the transconductance value. The proposed OTA is developed around a cascade of two transconductor stages, making the transconductance dependent on the bias current ratio. A combination of linearization techniques: bulk input, parallel differential pairs and feedback, is used to achieve sufficient linear range for CI speech processing. Wide-range parameter tuning of the speech processing sections is illustrated on a variable gain amplifier, a bandpass Tow-Thomas biquad and an envelope detector. Finally, the complete CI speech processing chain is illustrated. The proposed OTA and its employment in CI analog speech processing are validated on a 350 nm CMOS process.


References | Cited By  «-- Click to see who has cited this paper

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[CrossRef] [Web of Science Times Cited 19] [SCOPUS Times Cited 40]


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[CrossRef] [SCOPUS Times Cited 4]


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[6] S. Hintea, P. Farago, M. N. Roman, G. Oltean, L. Festila, "A Programmable Gain Amplifier for Automated Gain Control in Auditory Prostheses", J. Med. Biol. Eng., vol. 31. no 3, pp 185-192, 2011.
[CrossRef] [Web of Science Times Cited 7] [SCOPUS Times Cited 9]


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[CrossRef] [Web of Science Times Cited 19] [SCOPUS Times Cited 37]


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[CrossRef] [Web of Science Times Cited 10] [SCOPUS Times Cited 20]


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[CrossRef] [SCOPUS Times Cited 3]


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[CrossRef] [Web of Science Times Cited 81]


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[CrossRef] [Web of Science Times Cited 50] [SCOPUS Times Cited 59]


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[CrossRef] [Full Text] [Web of Science Times Cited 6] [SCOPUS Times Cited 6]


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[16] S. Dwivedi, A. K. Gogoi, "A 0.8 V CMOS OTA and Its Application in Realizing a Neural Recording Amplifier", Journal of Medical and Bioengineering, vol. 4, no. 3, pp. 227-234, 2015.
[CrossRef]


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[CrossRef]


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[CrossRef] [Web of Science Times Cited 87] [SCOPUS Times Cited 99]


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[CrossRef]


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[CrossRef] [Web of Science Times Cited 116] [SCOPUS Times Cited 133]




References Weight

Web of Science® Citations for all references: 845 TCR
SCOPUS® Citations for all references: 988 TCR

Web of Science® Average Citations per reference: 38 ACR
SCOPUS® Average Citations per reference: 45 ACR

TCR = Total Citations for References / ACR = Average Citations per Reference

We introduced in 2010 - for the first time in scientific publishing, the term "References Weight", as a quantitative indication of the quality ... Read more

Citations for references updated on 2018-06-21 00:29 in 131 seconds.




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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania


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