A sub-microwatt low-noise amplifier for neural recording

被引：55

作者：

Holleman, Jeremy ^{[1
]}

Otis, Brian ^{[1
]}

机构：

[1] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA

来源：

2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16 | 2007年

关键词：

D O I：

10.1109/IEMBS.2007.4353193

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this paper we present a pre-amplifier designed for neural recording applications. Extremely low power dissipation is achieved by operating in an open-loop configuration, restricting the circuit to a single current branch, and reusing current to improve noise performance. Our amplifier exhibits 3.5 mu Vrms of input-referred noise and has a digitally-controlled gain between 36dB and 44dB. The amplifier is AC-coupled, with a pass-band from 0.3 Hz to 4.7kHz. The circuit is implemented in a 0.51 mu m SOI Bi-CMOS process and consumes 805nA from a 1.0V supply, corresponding to a noise efficiency factor (NEF) of 1.8, which is the lowest reported NEF to date.

引用

页码：3930 / 3933

页数：4

共 10 条

[1] A wireless implantable multichannel digital neural recording system for a micromachined sieve electrode [J].

Akin, T ;

Najafi, K ;

Bradley, RM .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1998, 33 (01) :109-118

[2]

Allen P., 2002, CMOS ANALOG CIRCUIT, VSecond

[3] A 2-nW 1.1-V self-biased current reference in CMOS technology [J].

Camacho-Galeano, EM ;

Galup-Montoro, C ;

Schneider, MC .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2005, 52 (02) :61-65

[4]

DENISON T, 2007, INT SOL STAT CIRC C

[5] A low-power integrated circuit for a wireless 100-electrode neural recording system [J].

Harrison, Reid R. ;

Watkins, Paul T. ;

Kier, Ryan J. ;

Lovejoy, Robert O. ;

Black, Daniel J. ;

Greger, Bradley ;

Solzbacher, Florian .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2007, 42 (01) :123-133

[6] A low-power low-noise CMOS amplifier for neural recording applications [J].

Harrison, RR ;

Charles, C .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2003, 38 (06) :958-965

[7]

NAJAFI K, 1986, SOLID STATE CIRCUITS, V21, P1035

[8] A MICROPOWER LOW-NOISE MONOLITHIC INSTRUMENTATION AMPLIFIER FOR MEDICAL PURPOSES [J].

STEYAERT, MSJ ;

SANSEN, WMC ;

CHANG, ZY .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1987, 22 (06) :1163-1168

[9] Wireless implantable microsystems: High-density electronic interfaces to the nervous system [J].

Wise, KD ;

Anderson, DJ ;

Hetke, JF ;

Kipke, DR ;

Najafi, K .

PROCEEDINGS OF THE IEEE, 2004, 92 (01) :76-97

[10]

Wu H., 2006, 2006 IEEE INT C, P119

← 1 →