hi, i bought a op amp max407 amplifier and i want to connect with photodiode but it didnt work. anyone know why or a good circuit to operate

 

How does it "not work"?
How do we know how you have it wired?
Show your schematic. Show your physical setup.

 

hi, i bought a op amp max407 amplifier and i want to connect with photodiode but it didnt work. anyone know why or a good circuit to operate

Google is your friend.

Bob

 

Welcome to AAC!

i want to connect with photodiode but it didnt work. anyone know why or a good circuit to operate

You didn't give us much to work with. How did you have it connected?

Here are two suggestions from Nat Semi:

 

yes you have right...i do both of them and none response

 

There are two types of photo diode. Those that emit IR and those that detect IR. Do you have the right type?
Do you have it connected the right way round?

 

How do you know what type of response to expect?

What is the stimulus?
What is the detector?

 

yes you have right...i do both of them and none response

What are your supply voltages? What is the gain? What is the stimulus?

 

in Vin i give 5V.the resistor of feddback is 1M and the other resistor is 100k. the output voltage is 0.5V.when light up the photodiode the voltage of vout decreases instead of increase.. and in that point i stop because it seems strange to me

 

The circuits you are using have a both a +V and -V supply with reference to ground. They will not work if you are using a single 5V supply.
It is very misleading for a beginner when an op-amp circuit is drawn without showing the how the power supplies are connected.

 

this is true and difficult to me so i searched and found an op amp that needs power supply 5V in pin8 and ground in pin 4 , so that I do not have to make a circuit with V- supply

 

hi Dany,
Please post your new circuit, we can check it out.
E

 

Here is a single supply circuit for an IR detector. It should work with the op-amp you have but you will need to re-assign the pin numbers on the diagram: :