The MAX9934TAUA+T is a single-channel current-sense amplifier from Analog Devices, built to monitor current through a shunt resistor on the high side or low side of a supply rail. It delivers a voltage output proportional to the sensed current, with a -3dB bandwidth of 1.5 kHz — enough to capture DC load changes and low-frequency ripple, but not fast switching edges. Supply current sits at 120 µA, making it a fit for always-on monitoring in battery-powered or energy-conscious designs. The input offset voltage is trimmed to 10 µV, which keeps the measurement error small at low shunt drops. Operating from 2.5 V to 3.6 V and rated across -40°C to 125°C, it covers industrial sensor nodes, automotive module current telemetry, and outdoor telecom gear without a temperature grade gap.
The -3dB bandwidth is 1.5 kHz. For a current-sense application, this means the output can track a 1 kHz load transient with reasonable fidelity, but a 10 kHz switching ripple from a DC-DC converter will be attenuated.
It is ROHS3 compliant.