Implantable microsystem for wireless neural recording applications

A prototype microsystem is presented for wireless neural recording application. An inductive link was built for transcutaneous wireless power transfer and data transmission. Total 16.5 mW power and 50 bps - 2.5 Kbps command data can be received over 1-5 MHz with a distance of 0-10 mm. The integrated...

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Bibliographic Details
Main Authors: Xu Zhang, Weihua Pei, Beiju Huang, Jin Chen, Ning Guan, Hongda Chen
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Circuit testing
CMOS integrated circuits
Data communication
Data mining
Gain
Neurotransmitters
Preamplifiers
Prototypes
Signal design
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Summary:A prototype microsystem is presented for wireless neural recording application. An inductive link was built for transcutaneous wireless power transfer and data transmission. Total 16.5 mW power and 50 bps - 2.5 Kbps command data can be received over 1-5 MHz with a distance of 0-10 mm. The integrated amplifiers were designed with a limited bandwidth for neural signals acquisition. The gain of 60 dB was obtained by preamplifier at 7 Hz - 3 KHz. An integrated FM transmitter was used to transmit the extracted neural signals to external equipments with 0.374 - 2 mW power comsumption and a maximum data rate of 500 Kbps at 100 MHz. All the integrated circuits modules except the power recovery circuit were tested or stimulated under a 3.3 V power supply, and fabricated in standard CMOS processing.
DOI:10.1109/ICCME.2009.4906639