A 430nW 64nV/vHz current-reuse telescopic amplifier for neural recording applications

Author

Song, Seunghyun ; Rooijakkers, M.J. ; Harpe, Pieter ; Rabotti, C. ; Mischi, Massimo ; van Roermund, Arthur H. M. ; Cantatore, Eugenio

Author_Institution

Dept. of Electr. Eng., Eindhoven Univ. of Technol., Eindhoven, Netherlands

fYear

2013

fDate

Oct. 31 2013-Nov. 2 2013

Firstpage

322

Lastpage

325

Abstract

This paper presents a low-power low-noise amplifier for neural recording applications. A single-stage current-reuse telescopic topology is proposed to achieve high DC gain and improve the noise efficiency factor (NEF) while allowing the amplifier to be scaled for high bandwidth sensing applications and/or to achieve lower thermal noise floor. The design is fabricated in a standard 0.18μm CMOS process and occupies an active area of 0.16mm². Experimental measurements show a 430nW power consumption from a 1.2V supply, a thermal noise floor of 63.8nV/√Hz and a corresponding NEF of 1.5.

Keywords

CMOS integrated circuits; amplifiers; biomedical electronics; neurophysiology; current-reuse telescopic amplifier; high DC gain; high bandwidth sensing applications; low-power low-noise amplifier; lower thermal noise floor; neural recording applications; noise efficiency factor; power 430 nW; single-stage current-reuse telescopic topology; standard CMOS process; voltage 1.2 V; Bandwidth; Current measurement; Floors; Noise; Thermal noise; Topology; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference (BioCAS), 2013 IEEE

Conference_Location

Rotterdam

Type

conf

DOI

10.1109/BioCAS.2013.6679704

Filename

6679704