Award Number: W81XWH-08-1-0168 TITLE: Implantable Microsystems for Anatomical Rewiring of Cortical Circuitry: A New Approach for Brain Repair PRINCIPAL INVESTIGATOR:
نویسنده
چکیده
This paper describes a fully integrated neural recording front-end comprising a low-noise two-stageamplification circuitry and a 10-b successive approximationregister (SAR)-based ADC as part of a fully implantable brain-machine-brain interface (BMBI) device for neuroanatomical rewiring of cortical circuitry in an injured brain. Fabricatedusing the TSMC 0.35 μm 2P/4M n-well CMOS process, the ac-coupled amplification circuitry provides a maximum mid-bandac gain of ~52 dB and features a measured input-referred voltage noise of 3.5 μVrms from 0.1 Hz to 12.8 kHz, while dissipating ~78μW from 2 V. The SAR ADC features an ENOB of ~9.4 formaximum sampling frequency of ~45 kSa/s, while dissipatingonly 16 μW. Benchtop as well as in vitro measurement results in saline are reported.
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