When I drive my AD8021 with signal higher than ~300mV my output signal (sine) starts to distort. Without the compensation capacitor I can input larger values before the distortion starts, but when it then starts it seems more severe. I have work with these chips before, but this is the first time I see this type of behavior.
setup; AD8021 gain set to 6.2 with Rf = 1k, PSU supplies at +/-12V with lots of decoupling capacitors.
Does anyone have an idea what the cause of this could be or have seen something similar?