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 in a contactless way.

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Top features

  • 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

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MLX91211 - 40 kHz conventional Hall current sensor IC - MLX91211

Product description

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.

 MLX91211 - 40 kHz conventional Hall current sensor IC

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.

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

Features and benefits

  • 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

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