please help me with this circuit

[shreekalak]

the shown diagram i have used as current to voltage converter in the case of photodiode. pin 1 corresponds to cathode of photodiode and pin 2 corresponds to anode which is grounded.

i am using INA128... please help me about the working how the current is converted to voltage in this case...

 

[LordAli]

On the first sight it seems that some components are missing. At least one bias resistor on pin 1. In your circuit inputs floats.

See there pdf (free download)
**broken link removed**

on the page 36 and 37.

and analog devices
http://www.analog.com/en/amplifiers...de_to_instrumentation_amps/resources/fca.html