The following is the circuit for Light communication using opt 101P photodiode.
Connections are COM pin (pin 8), and pin 3(-V) are grounded. Input volatge(pin 1) Vcc = 9 V . OPT 101 has a photodiode and a transimpedance amplifier.
Here is the data sheet for opt 101P.
I have given proper connections according to the datasheet. But the problem here is opt 101P photodiode is not detecting the light.
If the photodiode is illuminated with light, small photocurrent produced is converted into the voltage by transimpedance amplifier at pin 5. But in my test, I didn't get any voltage at the output pin 5. Can anyone specify how to test opt101P photodiode?