Improved trade-off between noise and bandwidth in op-amp based transimpedance amplifier

Author

Ciofi, C. ; Crupi, F. ; Pace, C. ; Scandurra, G.

Author_Institution

DFMTFA, Messina Univ., Italy

Volume

3

fYear

2004

fDate

18-20 May 2004

Firstpage

1990

Abstract

In this work, we propose a new circuit topology for a transimpedance amplifier which allows to obtain an improved trade-off between equivalent input noise and bandwidth with respect to the conventional approach. We report a simple op-amp based circuit implementation of the new transimpedance amplifier together with the results of its noise and bandwidth characterization. The comparison between these measurements with those obtained on a conventional transimpedance amplifier has confirmed that the proposed approach allows to obtain lower background noise and larger bandwidth for the same transimpedance gain.

Keywords

circuit noise; feedback amplifiers; network topology; operational amplifiers; circuit topology; equivalent impedance; equivalent input noise; feedback resistor; improved trade-off; larger bandwidth; lower background noise; op-amp based transimpedance amplifier; spectral analysis; Bandwidth; Circuit noise; Circuit topology; Frequency; Low-noise amplifiers; Noise level; Noise measurement; Operational amplifiers; Resistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE

ISSN

1091-5281

Print_ISBN

0-7803-8248-X

Type

conf

DOI

10.1109/IMTC.2004.1351478

Filename

1351478