Low noise amplification for optical detector arrays [microbes detection]

Author

Duncan, A. ; Powers, L.

Author_Institution

Nat. Center for the Design of Molecular Function, Utah State Univ., Logan, UT, USA

Volume

3

fYear

2001

fDate

2001

Firstpage

3040

Abstract

Detection of low intensity light pulses is accomplished using a three stage amplifier design. A highly sensitive input stage provides a large gain and buffers the sensor from the following stages. An integration stage averages the input signal and holds the output value during data collection. Low impedance output drive capability and noise immunity are provided by a third stage. The combination of these three stages produces a system capable of detecting photocurrent signals in the range of 10-100 nA.

Keywords

amplifiers; biological techniques; microorganisms; optical arrays; optical sensors; photoelectricity; 10 to 100 nA; biophysical technique; highly sensitive input stage; integration stage; low impedance output drive capability; low intensity light pulses detection; low noise amplification; microbes detection; noise immunity; optical detector arrays; output value holding; photocurrent signals detection; Impedance; Optical amplifiers; Optical arrays; Optical buffering; Optical detectors; Optical noise; Optical pulses; Photoconductivity; Pulse amplifiers; Sensor arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1017440

Filename

1017440