80 kHz current sense in a SOT-23-6 footprint
The MAX40010HAUT+T is a single-channel current sense amplifier from Analog Devices, built to translate a small differential voltage across a shunt resistor into a ground-referenced output. Its 80 kHz -3dB bandwidth suits DC rail monitoring and low-frequency load tracking where the signal of interest changes at sub-kHz rates — think power-supply current telemetry or motor-winding DC bus monitoring, not high-speed switching waveforms.
Parametric fit for precision current monitoring
Input offset voltage is 12 µV typical — this sets the floor on the minimum measurable shunt voltage. For a 10 mΩ shunt, 12 µV offset corresponds to a 1.2 mA zero-current error, which is acceptable for load currents in the ampere range but would dominate a sub-100 mA measurement. Input bias current is 65 µA — this flows into the shunt and adds a voltage drop that appears as an offset. With a 10 mΩ shunt, the bias contributes 0.65 µV of additional error, negligible compared to the offset.
Package and board integration
Housed in a 6-lead SOT-23 (SOT-6 supplier designation), the part uses the standard 0.95 mm pitch footprint shared by dozens of logic and analog parts — no custom land pattern needed. Available on tape and reel (TR) or cut tape (CT) — the reel format suits automated pick-and-place for production volumes; cut tape works for prototype builds where only a handful of parts are needed.