A Low-Power Low-Distortion Amplifier for Fly Neural Recordings

Author

Yue, Xicai ; Peterson, K. ; Krapp, H.G. ; Drakakis, E.M.

Author_Institution

Dept. of Bioeng., Imperial Coll. London, London, UK

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

This paper presents the design and simulation of a low-power and low-distortion amplifier for fly neural recordings based on a gain boosted differential operational-transconductance amplifier (OTA). The amplifier has been designed in a commercially available 0.35μm CMOS process. Powered by 1.5V, it consumes 16.5μW and has a gain of 66+dBs and a bandwidth of 10 KHz. Its gain and linearity are not sensitive to power supply variations, making it suitable for feeding by a paper battery when recording brain neural signals from moving flies. The designed amplifier is capable of driving a 10pF capacitive load therefore it can be directly connected to an oscilloscope or an ADC input.

Keywords

CMOS analogue integrated circuits; amplifiers; brain; differential amplifiers; low-power electronics; operational amplifiers; oscilloscopes; recording; CMOS process; OTA; brain neural signal recording; fly neural recordings; frequency 10 kHz; gain boosted differential operational-transconductance amplifier; low-distortion amplifier; oscilloscopes; paper battery; power 16.5 muW; power supply variations; size 35 mum; voltage 1.5 V; Animals; Batteries; Differential amplifiers; Energy consumption; Heating; Insects; Linearity; Operational amplifiers; Power supplies; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5516098

Filename

5516098