15th IEEE Instrumentation and Measurement Technology Conference - IMTC 1998, Saint Paul (Estados Unidos de América). 18-21 mayo 1998
Resumen:
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.
Palabras clave: Voltage, Instruments, Impedance, Low-frequency noise, Current measurement, Temperature control, Differential amplifiers, Telecommunications, Low-noise amplifiers, Frequency
Fecha de publicación: mayo 1998.
Cita:
Ciofi, C., Festa, G., Giannetti, R., Neri, B., 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 (Estados Unidos de América). 18-21 mayo 1998.
IIT-98-089A
