Dear team.
For AD8420 port surge protection, what is the appropriate protection voltage for TVS?

AD8420
Recommended for New Designs
The AD8420 is a low cost, micropower, wide supply range, instrumentation amplifier with a rail-to-rail output and a novel architecture that allows for...
Datasheet
AD8420 on Analog.com
Dear team.
For AD8420 port surge protection, what is the appropriate protection voltage for TVS?

Hi,
The differential input voltage range of AD8420 is +/-1V.
The 50 Ohms resistor converts the sense current which is specified to 4mA to 20mA.
Hence, 20mA * 50 Ohms = 1V.
Thanks and regards.