I am trying to test the Trans-impedance amplifier design using AD8605 for the photo-diode application circuit.
currently i am using an NI 9265 module to generate current source up to 20mA in my setup
below is my circuit:
when i try to set the current to 500 micro Amps from the sources and feed to inverting terminal of AD8605; the output voltage of I-V amp is in few millivolts (~14mV).
But actual result is expected to be saturated at high level 3.3V.
is this correct or i am doing something wrong ?
please provide me the way to test the Trans-impedance circuit output with the current sources(micro amps range).