Session 14-2

A 96-Channel Full Data Rate Direct Neural Interface
in 0.13µm CMOS

 

Abstract

A sensor interface consumes 6.5 mW from 1.2 V supplies while occupying 5 mm x 5 mm in 0.13 μm CMOS. The interface enables full bandwidth access to 96 channels of data acquired from cortical microelectrodes as part of a head-mounted wireless recording system. Open loop amplification and switched-capacitor filtering with 2.2 μVrms input referred noise conditions the signals before conversion by 10-bit SAR ADCs with 60.3 dB SNDR and 41.5 fJ/conv step.