I have a problem: I have a 24V power supply and I want to measure the current of it with the Texas Instruments INA209.
The INA209 has for voltage an absolute maximum rating of 26V.
I would like to have an overvoltage protection in front of the INA209, which shold be a pretty precise overvoltage protection, since 24V is the normal operation, and 26V is the absolut maximum of the INA209.
I have looked at the TVS diodes, and Zener diodes, but all of them have a greater tolerance than what is needed here.
Has anyone a simple solution for this? Is there a special IC for it?