What this automotive current-sense amplifier brings to the BOM
The Texas Instruments INA250A1QPWRQ1 is a single-channel current-sense amplifier in a 16-TSSOP package, qualified to AEC-Q100 for automotive use. It operates from 2.7 V to 36 V, drawing 200 µA supply current, and delivers a gain-bandwidth product of 50 kHz with a 0.2 V/µs slew rate. The -40°C to 125°C temperature range covers under-hood and chassis-domain environments. For a board-level current monitor that needs to survive thermal cycling and vibration, this is the part that fits — the 16-TSSOP body is compact enough for dense ECUs but still reworkable with a hot-air station if a pad lifts.
Bandwidth and slew — where the spec matters
With 50 kHz GBW and 0.2 V/µs slew rate, this part is sized for DC and low-frequency current monitoring — think battery charge/discharge, motor winding current averaged over a PWM cycle, or load detection in a power distribution module. It is not built for high-speed switching waveforms or sub-microsecond fault capture; for that you would step up to the INA254A1IPWAR with 350 kHz bandwidth and 2.4 V/µs slew.