in order to characterize transistors I am interested in visualizing the drain-current response of a field-effect transistor to a gate voltage pulse on an oscilloscope.
With our present setup the lower limit for the drain-current-waveform is around 100 nA at pulses in the us-range with a rise time of 10 s but we would like to get an even better setup in order to be able to measure currents of a few nA with rise-times of a few ns.
So we need quite a fast low noise current-to-voltage-converter: either a transimpedance amplifier or a differential amplifier with a shunt-resistor.
Is there an amplifier from Analog devices that would fit to our requirements?
Here in short:
- convert current into voltage in order to visualize on an oscilloscope
- current < 100 nA, ideally a few nA
- rise/fall time ideally a few ns
Thank you for your help in advance,