Hello,
I'm want to use OPA211 to design a low noise amplifier.
However, when I use the SPICE model in the simulator, I see an effect starting from 1MHz (picture is output noise of unity gain buffer for reference).
When I looked into the SPICE model, it states "INPUT VOLTAGE NOISE WITH 1/F AND FEATURE AT 20 MEGAHERTZ" .
What is this feature? I don't see anything in the datasheet of the opamp about this effect?
Thanks,
Sven
