Precision current sense in a SOT-23-6 — what the 400 Hz bandwidth tells you
The MAX44284EAUT+T is a single-channel current-sense amplifier from Analog Devices, built for low-side current measurement in a SOT-23-6 package. Its 400 Hz -3 dB bandwidth means this part is designed for DC and low-frequency AC current monitoring — think battery charge/discharge, power-supply output current, or motor-phase current at moderate PWM rates. The 15 µV input offset voltage and 2 nA input bias current keep the measurement error small, so a 10 mV drop across a sense resistor resolves with a few percent accuracy. Supply range from 1.7 V to 5.5 V covers 3.3 V and 5 V rails cleanly, and the 21 µA quiescent current suits battery-powered gear where every microamp counts.
Temperature grade and deployment environment
Rated for -40°C to 125°C, the MAX44284EAUT+T handles industrial enclosures, outdoor telecom cabinets, and under-hood automotive environments without derating. The SOT-23-6 footprint is a common small-signal package, easy to place and solder in reflow. Surface-mount assembly is standard for modern PCBs.