Hello,
I'm working on a amplifier for a photo detector rated at 0.17A/W. I'm trying to figure out with a circuit that was used before on similar amplifier. I would like to understand what's the purpose of the Diode (D2). I think I got it clear that this is a LPF/Integrator but don't understand why the diode is there. Any references to app notes or ideas will be appreciated.
I'm working on a amplifier for a photo detector rated at 0.17A/W. I'm trying to figure out with a circuit that was used before on similar amplifier. I would like to understand what's the purpose of the Diode (D2). I think I got it clear that this is a LPF/Integrator but don't understand why the diode is there. Any references to app notes or ideas will be appreciated.