Hello,
I am using the OPA2227 as a voltage follower to buffer a reference voltage in my circuit. Reading the datasheet, I noticed that it is specified that when using OPA2227 as an unity gain buffer, the input current has to be limited to 20mA. Why is that, concerning that the input bias current is limited to 10nA on the datasheet? Does this concern some transient behaviour, or are high input currents common in real voltage followers?