An integrated power, area and noise efficient AFE for large scale multichannel neural recording systems

Author

Ashwath Krishnan, K. ; Farshchi, Shahin ; Judy, Jack

Author_Institution

Electr. Eng. Dept., Univ. of California, Los Angeles, Los Angeles, CA, USA

fYear

2014

fDate

26-30 Aug. 2014

Firstpage

2649

Lastpage

2652

Abstract

A wideband, low-power, low-noise and area-efficient analog front-end (AFE) for acquiring neural signals is described. The AFE builds upon existing architectures but uses block-wise optimization to achieve superior performance when used in a multichannel system with scalable channel count. The AFE is also the first of its kind to enable acquisition from extended neural bandwidths greater than 10 kHz. The AFE is designed in 65 nm CMOS technology and consumes 11.3 μW of power while occupying 0.06 mm² per channel and delivering an NEF of 2.92.

Keywords

CMOS integrated circuits; biomedical electronics; brain; digital filters; medical signal processing; neurophysiology; optimisation; AFE; CMOS technology; area-efficient analog front-end; block-wise optimization; extended neural bandwidths; integrated power AFE; low-noise-efficient analog front-end; low-power analog front-end; multichannel system; neural signals; power 11.3 muW; scalable channel count; wideband analog front-end; Capacitors; Clocks; Computer architecture; Finite impulse response filters; Noise; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1557-170X

Type

conf

DOI

10.1109/EMBC.2014.6944167

Filename

6944167