WIDE BANDWIDTH TRANSIMPEDANCE PREAMPLIFIER FOR A SCANNING TUNNELING MICROSCOPE

Authors
DEMMING F DICKMANN K JERSCH J
Citation
F. Demming et al., WIDE BANDWIDTH TRANSIMPEDANCE PREAMPLIFIER FOR A SCANNING TUNNELING MICROSCOPE, Review of scientific instruments, 69(6), 1998, pp. 2406-2408
Citations number
5
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
69
Issue
6
Year of publication
1998
Pages
2406 - 2408
Database
ISI
SICI code
0034-6748(1998)69:6<2406:WBTPFA>2.0.ZU;2-0
Abstract
A new two-stage transimpedance preamplifier in feedback picoammeter se tup for use in scanning tunneling microscopy is represented. The first stage consisting of a wide band field effect transistor input operati onal amplifier with resistive feedback has a transimpedance of 20 k Oh m and a 3 dB bandwidth of 35 MHz. This setup is built to investigate s ub mu s fluctuations in the tunneling current. (C) 1998 American Insti tute of Physics. [S0034-6748(98)00706-0].