A 0.9 v 96 μw fully operational digital hearing aid chip

IEEE Journal of Solid-State Circuits

Volumn 42, Issue 11, 2007, Pages 2432-2440

  Kim, Sunyoung ^a   Cho, Namjun ^a   Song, Seong Jun ^b   Yoo, Hoi Jun ^a  

^a Korea Advanced Institute of Science and Technology (KAIST)   (South Korea)

^b SAMSUNG Electronics   (South Korea)

Author keywords

Adaptive SNR analog front end; Dedicated DSP; Digital hearing aid; Heterogeneous DAC; internal status controller

Indexed keywords

ADAPTIVE-SNR ANALOG FRONT END; AUDIO BANDS; AUDIO SIGNALS; AUTOMATIC GAIN CONTROLS; CORE AREAS; DEDICATED DSP; DIFFERENT FREQUENCIES; DIGITAL COMPARATORS; DIGITAL HEARING AID; ERROR RATES; FABRICATED CHIPS; FULLY OPERATIONAL; HEARING AID; INPUT SIGNALS; INTERNAL STATUS CONTROLLER; INTERPOLATION FILTERS; LOW-POWER; NOISE VOLTAGES; POWER CONSUMPTION; POWER DISSIPATIONS; SAMPLING CLOCKS; STANDARD CMOS PROCESS; VOLUME CONTROLS;

ACOUSTIC INTENSITY; AUDITION; CONTROL SYSTEM ANALYSIS; CONTROLLERS; DIGITAL SIGNAL PROCESSORS; ELECTRIC POWER UTILIZATION; GAIN CONTROL; HEARING AIDS; SIGNAL TO NOISE RATIO;

DIGITAL INTEGRATED CIRCUITS;

EID: 61849110116     PISSN: 00189200     EISSN: None     Source Type: Journal    
DOI: 10.1109/JSSC.2007.907198     Document Type: Conference Paper

References (13)

1. W. David, R. Mark, H. Tho, P. David, and N. James, "A single-chip hearing aid with one volt switched-capacitor filters," in Proc. IEEE CICC, 1992, pp. 7.5.1-7.5.4.
2. H. Neuteboom, M. A. E. Janssens, J. R. G. M. Leenen, B. M. J. Kup, E. C. Dijkmans, B. de Koning, V. A. J. Frowijn, R. D. N. De Bleecker, E. J. van der Zwan, S. M. M. Note, Z.-L. Wu, and M. S. R. Masschelein, "A single battery, 0.9 V-operated digital sound processing IC including AD/DA and IR receiver with 2 mW power consumption," in IEEE ISSCC Dig. Tech. Papers, 1997, pp. 98-99.
3. S. Kochkin, "MarkeTrak VII: Hearing loss population tops 31 million people," Hearing Rev., vol. 12, no. 7, pp. 16-29, Jul. 2005.
4. J. Titus, "I can hear you now," Test & Meas. World, Sep. 1, 2003.
5. M. Ross, "Digital hearing aids: Still more comments," Hearing Loss, Mar./Apr. 1999 [Online]. Available: http://www. hearingresearch. org/Dr.Ross/Digital-HAs-more.htm
6. S. Kim, J.-Y. Lee, S.-J. Song, N. Cho, and H.-J. Yoo, "An energyefficient analog front-end circuit for a sub-1V digital hearing aid chip," in Symp. VLSI Circuits Dig. Tech. Papers, 2005, pp. 176-179.
7. S. Kim, J.-Y. Lee, S.-J. Song, N. Cho, and H.-J. Yoo, "An energyefficient analog front-end circuit for a sub-1-V digital hearing aid chip," IEEE J. Solid-State Circuits, vol. 41, no. 4, pp. 1081-1091, Apr. 2006.
8. M. Samet, M. Masmoudi, and J. Mouine, "A new single chip automatic gain control for hearing aids," in Proc. IEEE Canadian Conf. Electrical and Computer Engineering,Waterloo, ON, Canada, May 1998, vol. 2, pp. 758-761.
9. quot;Hearing aid digital filter," U.S. Patent 6,292,571, Sep. 18, 2001.
10. R. N. Steven, S. Richard, and C. T. Gabor, Delta-Sigma Data Converters- Theory, Design, and Simulation. New York: IEEE Press, 1997.
11. H. Neuteboom, B. M. J. Kup, and M. Hanssens, "A DSP-based hearing instrument IC," IEEE J. Solid-State Circuits, vol. 32, no. 11, pp. 1790-1806, Nov. 1997.
12. F. Serra-Graells, L. Gomez, and J. L. Huertas, "A true-1-V 300--W CMOS-subthreshold log-domain hearing-aid-on-chip," IEEE J. Solid- State Circuits, vol. 39, no. 8, pp. 1271-1281, Aug. 2004.
13. S. Kim and H.-J. Yoo, "Adaptive sigma-delta modulator," patent pending.