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

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