There's a TI model for the INA138 which works well and a much more complex TI model for the INA139 which doesn't work at all. I need the latter for the higher bandwidth and being a simple current sense chip have been looking to modify the values.
INA139 has 1K resistors on the input and INA138 has 5K.
Is it simply a case of modifying R11 and R20 in the attached lib? I ask because there's also another value at 5K, R20, and my best guess is it's to limit the max current going through the 1N1673.
INA139 has 1K resistors on the input and INA138 has 5K.
Is it simply a case of modifying R11 and R20 in the attached lib? I ask because there's also another value at 5K, R20, and my best guess is it's to limit the max current going through the 1N1673.