I´m currently using the AD8648 as an impedance converter in a sensor design.
Due to the special conditions of the source I can´t use a surge protection on the output of the opamp.
What ESD impact voltage can the output withstand?
Is there any internal ESD protection?
Where can I find a block schematic of the opamp?
The AD8648 meets AEQC-100. It passed HBM ESD on all pins at 1kV.
You said: "I can´t use a surge protection on the output of the opamp"
Did you really mean output or input?