Automotive current sense — AEC-Q100 qualified, SOT-23-5
The INA281A3QDBVRQ1: The SOT-23-5 package (SOT-753) keeps the footprint compact for space-constrained modules like battery-monitoring or motor-drive boards.
The 100 µV input offset voltage sets the floor for measurement accuracy. The 20 µA input bias current is typical for a bipolar-input current-sense amp.
Supply current and thermal range
The 1.5 mA supply current is moderate — not a micropower part, but low enough for always-on monitoring in systems with a 100 mA-hour battery budget.
For production programs that require a second source, the INA4290A2IRGVR is a four-channel current-sense amplifier in a similar voltage range, but with a 1.1 MHz GBW and 2 V/µs slew rate — not a pin-for-pin replacement, but a functional alternative if the design can accommodate a different package and channel count.