Current-sense amp in a SOT-23-5 — the parametric floor
The INA180B1IDBVR is a single-channel current-sense amplifier from Texas Instruments, packaged in the compact SOT-23-5 (SC-74A) footprint. It monitors current via a shunt resistor and outputs a voltage proportional to the sensed current with a rail-to-rail swing. The 100 µV input offset voltage and 80 µA input bias current set the error floor at the shunt node; for a 10 mΩ shunt at 1 A, the offset contributes a 10 mV error, which is about 0.1% of the full-scale reading.