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

fYear

2006

fDate

21-24 May 2006

Lastpage

2196

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.2006.1693054

Filename

1693054