Hi all,
I've got a simple photodiode transimpedance circuit: photodiode cathode connected to the inverting input, non-inverting input & PD anode to ground, and a 1Meg feedback resistor.
I'm not getting the results I expect, and I have a feeling the op-amp may be busted. What is the best way to test this? My first thoughts are to check that the op-amp inputs be at a similar potential - which they're not (the neg input is at about half a volt). What are other ways to troubleshoot a possibly busted op-amp?
Thanks in advance!
I've got a simple photodiode transimpedance circuit: photodiode cathode connected to the inverting input, non-inverting input & PD anode to ground, and a 1Meg feedback resistor.
I'm not getting the results I expect, and I have a feeling the op-amp may be busted. What is the best way to test this? My first thoughts are to check that the op-amp inputs be at a similar potential - which they're not (the neg input is at about half a volt). What are other ways to troubleshoot a possibly busted op-amp?
Thanks in advance!