AEC-Q100 current monitor for automotive high-side sensing
The INA197AQDBVRQ1: It senses current on the high side of the supply rail across a shunt resistor, with a ±3% accuracy over the full temperature range — sufficient for overcurrent detection and load monitoring in 12 V and 24 V automotive systems where the shunt drop stays below the 80 V common-mode limit.
Input range and temperature grade — what they mean for fit
The -16 V to 80 V input range covers reverse-battery conditions (the -16 V floor) and load-dump transients up to 80 V on a 12 V bus — the monitor survives the surge without an external clamp, though the shunt resistor must be rated for the peak fault current. The ±3% accuracy is a total unadjusted error across temperature — no external trimming or calibration is needed for a 5% or 10% detection threshold, but a precision current-sense application (e.g., battery-charge monitoring) would want the tighter 1.5% grade of the INA199B2QDCKRQ1.