A 96-channel full data rate direct neural interface in 0.13µm CMOS

Author

Walker, Ross M. ; Gao, Hua ; Nuyujukian, Paul ; Makinwa, Kofi ; Shenoy, K.V. ; Meng, Teresa ; Murmann, Boris

Author_Institution

Stanford Univ., Stanford, CA, USA

fYear

2011

fDate

15-17 June 2011

Firstpage

144

Lastpage

145

Abstract

A power and area efficient sensor interface consumes 6.5 mW from 1.2 V supplies while occupying 5 mm × 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 for unconstrained primate neuroscience experiments. Open loop amplification and switched-capacitor (SC) 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.

Keywords

CMOS digital integrated circuits; analogue-digital conversion; biomedical electrodes; biomedical electronics; microelectrodes; switched capacitor filters; 96-channel full data rate direct neural interface; CMOS; SAR ADC; SC filtering; SNDR; bandwidth access; cortical microelectrode; head-mounted wireless recording system; noise condition; open loop amplification; power 6.5 mW; primate neuroscience experiment; sensor interface; size 0.13 mum; switched-capacitor; voltage 1.2 V; word length 10 bit; Capacitance; Filtering; Integrated circuits; Neuroscience; Noise; Noise measurement; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits (VLSIC), 2011 Symposium on

Conference_Location

Honolulu, HI

ISSN

2158-5601

Print_ISBN

978-1-61284-175-5

Type

conf

Filename

5986078