Wireless neural recording with single low-power integrated circuit.
We present benchtop and in vivo experimental results from an integrated circuit designed for wireless implantable neural recording applications. The chip, which was fabricated in a commercially available 0.6- mum 2P3M BiCMOS process, contains 100 amplifiers, a 10-bit analog-to-digital converter (ADC), 100 threshold-based spike detectors, and a 902-928 MHz frequency-shift-keying (FSK) transmitter. Neural signals from a selected amplifier are sampled by the ADC at 15.7 kSps and telemetered over the FSK wireless data link. Power, clock, and command signals are sent to the chip wirelessly over a 2.765-MHz inductive (coil-to-coil) link. The chip is capable of operating with only two off-chip components: a power/command receiving coil and a 100-nF capacitor.
Harrison
Reid R
RR
Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA. harrison@ece.utah.edu
Kier
Ryan J
RJ
Chestek
Cynthia A
CA
Gilja
Vikash
V
Nuyujukian
Paul
P
Ryu
Stephen
S
Greger
Bradley
B
Solzbacher
Florian
F
Shenoy
Krishna V
KV
D000200:Action Potentials / Q000502:physiology*; D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009415:Nerve Net / Q000502:physiology*; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013686:Telemetry / Q000295:instrumentation*