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Signal amplification, detection and transmission in a wireless 100-electrode neural recording system

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5 Author(s)
Watkins, P.T. ; Dept. of Electr. & Comput. Eng., Utah Univ., Salt Lake, UT ; Kier, R.J. ; Lovejoy, R.O. ; Black, D.J.
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We are developing a fully-implantable neural recording system with wireless power and data transfer. As part of this system, we have developed a low-power integrated circuit that performs power rectification and regulation, reception of configuration data, neural signal amplification and filtering, spike detection, neural signal digitization and RF transmission. The chip includes 88 amplifiers having a gain of 60 dB from 1 to 5 kHz. An integrated ADC operates at 15 kSamples/sec with 9-bit resolution. A 433-MHz RF transmitter uses FSK modulation to transmit one digitized neural signal and spike detection data from all channels. Total power consumption is 13.5 mW

Published in:

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Date of Conference:

21-24 May 2006