NI DAQ USB-6009 - Low Input Impedance

[Baalshillem]

Hi,

looking through the specs sheet of NI DAQ USB-6009, we notice the remarkably low input impedance of 144kOhms.

Take the following circuit diagram of a transimpedance amplifier with a photodiode set to photovoltaic mode. We directly measure

output voltage at VOUT using USB-6009 in RSE mode. Would we see a noticeable decrease of voltage due to the DAQ drawing

current?