My customer is trying to use the LM2902 in a single supply configuration (+3.3V) to amplify a small AC signal. This signal swings around GND, but I only care about the positive signal being amplified. There is a possibility that this input signal can swing to -1.0V peak in some conditions, but I can easily limit the current.
1) How much current can the input’s reverse protection diode take?
2) I can also add a clamping diode on the input to limit this to -0.25V peak. I’m guessing if I do this, I don’t risk any damage to the part?
3) Typical operation shouldn’t exceed -60mV peak on the input (with very low current). I’m assuming this is fine for normal operation.
