I am using the ADA4084-1 in a non-inverting, follower configuration in a data acquisition application. The input is AC coupled. At high input power levels, the input suddenly latches to a high value, and will stay there until the input RMS voltage is brought down.
Here is the circuit.
Here is the (yellow) input at R26, for a small RMS input voltage (purple).
When a larger input voltage is selected, there is suddenly a large offset in the input voltage. Why?
Thanks for your attention.