Go top
Conference paper information

Ultra low noise, current to voltage converter with offset compensation independent of the source impedance

C. Ciofi, G. Festa, R. Giannetti, B. Neri

15th IEEE Instrumentation and Measurement Technology Conference - IMTC 1998, Saint Paul (United States of America). 18-21 May 1998


Summary:
A new version of a low-noise, high gain transimpedance amplifier, operating in the frequency range from DC to KHz, is described. The new version of the instrument, thanks to a completely differential architecture, is capable to give the same stability without controlling the temperature of the input stage, as in the previous one. A more sophisticated circuitry for offset nulling allows to null contemporaneously both voltage and current input offset sources. A further improvement of the performance, as far as low frequency noise is concerned, has been obtained. In fact, for instance, the input equivalent current noise is 5.2 fA//spl radic/Hz between 10 mHz and 2 Hz.


Keywords: Voltage, Instruments, Impedance, Low-frequency noise, Current measurement, Temperature control, Differential amplifiers, Telecommunications, Low-noise amplifiers, Frequency


DOI: DOI icon https://doi.org/10.1109/IMTC.1998.676826

Publication date: 1998-06-01.



Citation:
C. Ciofi, G. Festa, R. Giannetti, B. Neri, Ultra low noise, current to voltage converter with offset compensation independent of the source impedance, 15th IEEE Instrumentation and Measurement Technology Conference - IMTC 1998, Saint Paul (United States of America). 18-21 May 1998.

Request Request the document to be emailed to you.