Dual Hall-effect latch IC with speed and direction - Medium sensitivity

MLX92251

The MLX92251 is a 2nd gen Hall-effect dual latch IC designed in mixed signal CMOS technology. This device integrates a voltage regulator, two Hall sensors with advanced offset cancellation system and two open-drain output drivers, all in a single package.

Two Hall plates are integrated on the same piece of silicon, thus using the high precision of the wafer fabrication process to ensure a fixed spacing of 1.45 mm between the sensing elements. The first Hall plate signal is used to provide the speed signal output. The combination of both the first and second Hall plate signals is then internally processed to directly deliver a direction signal output.

The MLX92251 shares the MLX922xx-based platform, synonym of high performance in terms of electrical specification, magnetic specification and protection level. Two version are currently available, the MLX92251LSE-AAA-000 which has a medium sensitivity of 7.5mT and the MLX92251LSE-ABA-00 covering the more sensitive range with a typical value of 2.5mT.

With latching magnetic characteristics, the speed (SP) output is turned low or high respectively with a sufficiently strong South or North pole facing the package top side. When removing the magnetic field, the device keeps its previous state.

The direction (DIR) output is latched in Low or High state depending on the movement direction of the applied magnetic field, as a result of certain magnetic pulse sequence on both Hall sensors.

The MLX92251 is delivered in a Green compliant 5-pin TSOT for surface-mount process.

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Top features

  • Wide operating voltage range from 2.7 to 24 V

  • Two integrated Hall plates for direction detection

  • Latching magnetic characteristics

  • Speed and direction open-drain outputs

  • Direction output updated prior speed output

  • Excellent temperature stability

  • Reverse supply voltage protection

  • Output current limit with auto-shutoff

  • Under-voltage lockout protection

  • High ESD rating / Excellent EMC performance

  • Thin SOT23 5L green compliant package
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Dual Hall-effect latch IC with speed and direction - Medium sensitivity - MLX92251

Features and benefits

  • Wide operating voltage range from 2.7 to 24 V

  • Two integrated Hall plates for direction detection

  • Latching magnetic characteristics

  • Speed and direction open-drain outputs

  • Direction output updated prior speed output

  • Excellent temperature stability

  • Reverse supply voltage protection

  • Output current limit with auto-shutoff

  • Under-voltage lockout protection

  • High ESD rating / Excellent EMC performance

  • Thin SOT23 5L green compliant package

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