Journal
IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume 48, Issue 4, Pages 960-970Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2013.2238994
Keywords
Biomedical; brain-machine interface; implantable electronics; wireless; low power; analog
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A wirelessly powered 0.125 mm(2) 65 nm CMOS IC for Brain-Machine Interface applications integrates four 1.5 mu W amplifiers 96.5 mu Vrms 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 mu W and operates at 1 mm range in air with 50 mW transmit power.
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