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An Electronically Tunable Transconductance Amplifier for Use in Auditory ProsthesesFARAGO, P. , FARAGO, C. , OLTEAN, G. , HINTEA, S.
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analog processing circuits, cochlear implants, low-power electronics, operational transconductance amplifier, programmable circuits
cmos(8), circuits(7), amplifier(6), systems(4), signal(4), sarpeshkar(4), processing(4), power(4), farago(4), design(4)
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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
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|
| L. Magnelli, F. A. Amoroso, F. Crupi, G. Cappuccino, G. Iannaccone, "Design of a 75-nW, 0.5-V subthreshold complementary metal-oxide-semiconductor operational amplifier", International Journal of Circuit Theory and Applications, vol. 42, no. 9, pp. 967-977, Sept. 2014. |
[CrossRef] [Web of Science Times Cited 8] [SCOPUS Times Cited 1]
 R. Sarpeshkar, Ultra Low Power Bioelectronics: Fundamentals, Biomedical Applications, and Bio-Inspired Systems. Cambridge University Press, 2010.
[CrossRef] [SCOPUS Times Cited 74]
 P. C. Loizou, "Mimicking the Human Ear," IEEE Signal Processing Magazine. vol. 15(5), pp. 101-130, Sept. 1998.
[CrossRef] [Web of Science Times Cited 162] [SCOPUS Times Cited 199]
 R. Groza and M. Cirlugea, "Current-mode log-domain programmable gain amplifier," in 2014 IEEE International Conference on Automation Quality and Testing Robotics (AQTR), 2014, pp. 75-78.
[CrossRef] [SCOPUS Times Cited 1]
 S. Hintea, P. Farago, L. Festila, P. Soser, "Reconfigurable Filter Design for Implantable Auditory Prosthesis", Electronics and Electrical Engineering, vol. 99, no.3, pp.7-12, 2010.
 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 6] [SCOPUS Times Cited 7]
 Baker W, Sarpeshkar R, "Low-power single-loop and dual-loop AGCs for bionic ears", IEEE J. Solid-St. Circ., vol. 41, no. 9, 2006, pp. 1983-1996.
[CrossRef] [Web of Science Times Cited 15] [SCOPUS Times Cited 31]
 J. Silva-Martinez, S. Solis-Bustos, J. Salcedo-Suner, R. Rojas-Hernandez, M. Schellenberg, "A CMOS Hearing Aid Device", Analog Integrated Circuits and Signal Processing, Vol. 21, No. 2, pp 163-172, 1999.
[CrossRef] [Web of Science Times Cited 8] [SCOPUS Times Cited 17]
 P. Farago, C. Farago, S. Hintea, M. Cirlugea, "An Evolutionary Multi-objective Optimization Approach to Design the Sound Processor of a Hearing Aid," in Proc. IFMBE Proceedings, vol. 44, pp 181-186, 2014.
[CrossRef] [SCOPUS Times Cited 2]
 R. Sarpeshkar, R. F. Lyon, C. Mead, "A Low-Power Wide-Linear-Range Transconductance Amplifier," Analog Integrated Circuits and Signal Processing, vol. 13, No. 1-2, pp 123-151, May/June 1997.
[CrossRef] [Web of Science Times Cited 75]
 Barrie Gilbert, "The Multi-tanh Principle: A Tutorial Overview", IEEE Journal of Solid-State Circuits, vol. 33, no. 1, pp. 2-17, 1998.
[CrossRef] [Web of Science Times Cited 121] [SCOPUS Times Cited 152]
 P. M. Furth, A.G. Andreou, "Linearised differential transconductors in subthreshold CMOS", Electronics Letters, vol. 31, no. 7, pp. 545 - 547, 1995.
[CrossRef] [Web of Science Times Cited 38] [SCOPUS Times Cited 47]
 A. Veeravalli, E. Sánchez-Sinencio, J. Silva-Martínez, "A CMOS transconductance amplifier architecture with wide tuning range for very low frequency applications", IEEE Journal of Solid-State Circuits, vol. 37, no.6, pp. 776 - 781, 2002.
[CrossRef] [Web of Science Times Cited 44] [SCOPUS Times Cited 52]
 R. G. Bozomitu, V. Cehan, V. Popa, "A New Linearization Technique Using "Multi-sinh" Doublet", Advances in Electrical and Computer Engineering, vol. 9, no. 2, pp. 45-57, 2009.
[CrossRef] [Full Text] [Web of Science Times Cited 5] [SCOPUS Times Cited 5]
 P. M. Furth, On the Design of Optimal Continuous-Time Filter Banks in Subthreshold CMOS, PhD dissertation, Baltimore, Maryland, 1996
 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.
 C.-C. Hung, I. Halonen, M. Ismail, V. Porra, "Micropower CMOS Gm-C Filters for Speech Signal Processing," IEEE International Symposium on Circuits and Systems, Hong Kong, 1997, pp. 1972-1975.
 R. Torrance, T. Viswanathan, J. Hanson, "CMOS voltage to current transducers", IEEE Transactions on Circuits and Systems, vol. 32, no. 11, pp. 1097-1104, 1985.
[CrossRef] [Web of Science Times Cited 94]
 R. Sarpeshkar, C. Salthouse, S. Ji-Jon, M. W. Baker, S. M. Zhak, T. K.-T. Lu, L. Turicchia, S. Balster, "An ultra-low-power programmable analog bionic ear processor", IEEE Transactions on Biomedical Engineering, vol. 52, no. 4, pp. 711 - 727, 2005.
[CrossRef] [Web of Science Times Cited 77] [SCOPUS Times Cited 88]
 S. Jun, S. J. Ahn, "CMOS precision half-wave rectifying transconductor," in Proceedings of the 1998 IEEE International Symposium on Circuits and Systems, vol. 3, Monterey, 1198, pp. 659 - 662, 1998.
 P. Loizou, M. Dorman, Z. Tu, "On the number of channels needed to understand speech," Journal of Acoustical Society of America. Vol. 106(4), pp. 2097-2103, 1999.
[CrossRef] [Web of Science Times Cited 100] [SCOPUS Times Cited 118]
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