Title :
Signal amplification, detection and transmission in a wireless 100-electrode neural recording system
Author :
Watkins, Paul T. ; Kier, Ryan J. ; Lovejoy, Robert O. ; Black, Daniel J. ; Harrison, Reid R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Utah Univ., Salt Lake, UT
Abstract :
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
Keywords :
amplification; amplifiers; frequency shift keying; integrated circuit design; low-power electronics; microelectrodes; neural nets; signal detection; 433 MHz; 60 dB; FSK modulation; amplifiers; configuration data power reception; data transfer; fully-implantable neural recording system; integrated ADC; low-power integrated circuit; neural signal amplification; neural signal digitization; neural signal filtering; power consumption; power rectification; power regulation; radiofrequency transmission; signal detection; signal transmission; spike detection; wireless 100-electrode neural recording system; wireless power; Filtering; Frequency shift keying; Gain; Neurotransmitters; RF signals; Radio frequency; Radiofrequency amplifiers; Radiofrequency integrated circuits; Signal detection; Signal resolution;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693054
