I'm building a high side switch for overcurrent shutdown device using INA201 like in Figure 29 page 15
I need to withstand milstd1275 spec which means that I need to withstand surge voltages of 100V. Can adding input protection resistors of about 5-10K provide me this protection assuming the the precise gain is not important in our application.
According the the datasheet 7.4.1 (page 17) I can put input resistors for filtering (figure 27) and calculate the gain error.
In 7.4.3 it says that i can rely on the internal ESD diodes as long as I take into account the gain error.
in 6.2 footnote 2 (page 3) it says that i can exceed the voltage rating as long as the current is lower than 5mA.
Question 1) is it correct that if I put large resistors (about 5-10K) that will limit the current to less than 5mA I will get input protection against large voltage (100V) surges using the internal ESD diodes?
Question 2) Is there a formula that I can calculate the new gain including the input resistors i added?