title: Wireless neural recording with single low-power integrated circuit.
abstract: 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.
authors.affiliation: Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA. harrison@ece.utah.edu
authors.forename: Reid R
authors.initials: RR
authors.lastname: Harrison
authors.forename: Ryan J
authors.initials: RJ
authors.lastname: Kier
authors.forename: Cynthia A
authors.initials: CA
authors.lastname: Chestek
authors.forename: Vikash
authors.initials: V
authors.lastname: Gilja
authors.forename: Paul
authors.initials: P
authors.lastname: Nuyujukian
authors.forename: Stephen
authors.initials: S
authors.lastname: Ryu
authors.forename: Bradley
authors.initials: B
authors.lastname: Greger
authors.forename: Florian
authors.initials: F
authors.lastname: Solzbacher
authors.forename: Krishna V
authors.initials: KV
authors.lastname: Shenoy
mesh_terms: 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*