A LOW-NOISE WIDE-BAND TRANSIMPEDANCE AMPLIFIER FOR CURRENT NOISE SPECTRA MEASUREMENTS

Authors
DEGERONIMO G BERTUCCIO G LONGONI A
Citation
G. Degeronimo et al., A LOW-NOISE WIDE-BAND TRANSIMPEDANCE AMPLIFIER FOR CURRENT NOISE SPECTRA MEASUREMENTS, Review of scientific instruments, 67(7), 1996, pp. 2643-2647
Citations number
15
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
67
Issue
7
Year of publication
1996
Pages
2643 - 2647
Database
ISI
SICI code
0034-6748(1996)67:7<2643:ALWTAF>2.0.ZU;2-Z
Abstract
A low-noise wide-band transimpedance amplifier, designed to measure th e spectral noise densities of currents in submicroampere range, is pre sented. The feedback transimpedance amplifier is designed to operate i n a frequency range from 10-100 kHz, having an intrinsic noise as low as 3 fA/root Hz up to 1 kHz and less than 20 fA/root Hz at 100 kHz at room temperature allowing the measurement of the shot noise of current s down to the 100-pA range. The design criteria and experimental test on some devices are described. (C) 1996 American Institute of Physics.