The MLX91211 is a second-generation medium-speed current sensor that senses the magnetic field generated by the current flowing through a conductor, be it a cable, a bus bar or a PCB trace. To minimize the susceptibility to external magnetic fields and maximizing the concentration of the magnetic field generated by the current flow, the sensor is typically placed inside a ferromagnetic core. The sensor has an analog output ratiometric to its supply voltage (which can be in the range of 3.135 V to 5.5 V). The MLX91211 contains a voltage regulator for stable internal supply and optimum performances.

• Linear Hall sensor optimized for AC and DC current sensing applications
• Supply voltage in the range of 3.135 V to 5.5 V
• Analog ratiometric output voltage
• Factory trimmed magnetic sensitivity and offset
• Medium speed sensing
      - DC to 40 kHz bandwidth
      - < 10 µs response time
• Fast startup time enabling power gating
• Miniature packages RoHS compliant & Green
      - TSOT-3L (SE) surface mount
      - TO92-3L (UA) through hole mount
• Suitable for lead free soldering profile up to 260 °C, MSL3 (SE) and MSL1 (UA)
• AEC-Q100 automotive qualified

The output is proportional to the sensed magnetic field perpendicular to the package surface. The device is pre-programmed with different sensitivity settings as a function of different current sensing ranges and features a factory-calibrated quiescent output voltage at 50% of the supply voltage.

The sensor is optimized for cost-sensitive applications, and comes in 2 variants:

   - The ABT version with multi-temperature trimming of the sensitivity, and high accuracy
   - The ABA version with default trimming, and standard accuracy