Title :
A Fully-Integrated, Miniaturized (0.125 mm²) 10.5 µW Wireless Neural Sensor
Author :
Biederman, William ; Yeager, Daniel J. ; Narevsky, Nathan ; Koralek, A.C. ; Carmena, Jose M. ; Alon, Elad ; Rabaey, Jan M.
Author_Institution :
Department of Electrical Engineering and Computer Science, University of California, Berkeley, CA, USA
Abstract :
A wirelessly powered 0.125 mm² 65 nm CMOS IC for Brain-Machine Interface applications integrates four 1.5 µW amplifiers (6.5 µVrms input-referred noise with 10 kHz bandwidth) with power conditioning and communication circuitry. The multi-node backscatter frequency locks to a wireless interrogator using a frequency-domain multiple access communication scheme. The full system, verified with wirelessly powered in vivo recordings, consumes 10.5 µW and operates at 1 mm range in air with 50 mW transmit power.
Keywords :
Biomedical; analog; brain-machine interface; implantable electronics; low power; wireless;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2013.2238994
