how to test the AD8605 as TIA (I to V) design using current source?

Hello,

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).

thank you,

mani