MLX90291 is a SMD programmable linear Hall sensor with a PWM open-drain output targeting small stroke rotary and linear position sensor applications. It can also be used for slow current sensing applications.

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Top features

  • Programmable Hall-effect sensor: 12-bit 125Hz PWM output signal proportional to the magnetic flux density and switch function

  • Measurement range from ±15mT to ±400mT

  • Low noise output signal (PWM jitter)

  • Programmable through the connector (supply, ground and output)

  • 16-bit customer ID number (48-bit Melexis ID for traceability purposes)

  • SOIC8 (surface-mount) package RoHS compliant

  • Lead-free component, suitable for lead-free soldering profile 260°C

  • In-range and out-of-range programmable output quiescent voltage (Voq)

  • Hall plate quadrature spinning current/chopper-stabilized amplifier

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Programmable linear Hall-effect sensor - MLX90291

Product description

MLX90291 is a SMD programmable linear Hall sensor with a Pulse-Width Modulation (PWM) open-drain output, targeting for small stroke rotary and linear position sensor applications. It can also be used for slow current sensing application.

All magnetic response functions of the MLX90291 are fully programmable for versatility and system tolerances reduction (End-of-Line Calibration).

The output quiescent duty-cycle PWMoq (i.e. PWM @ B = 0 Gauss), sensitivity, sensing polarity, the magnitude of sensitivity drift over temperature (TC - first and second order), the clamping levels, the thermal PWMoq drift and the signal bandwidth, are all programmable through the connector terminals (Vdd-Vss-Out).

It features active error correction circuitry (quadrature spinning current and chopper-stabilized amplifier), which virtually eliminates the offset errors normally associated with Hall-effect devices.

The MLX90291 has a very stable thermal compensation for both the sensitivity and the Voq over a broad temperature range.

Features and benefits

  • Programmable Hall-effect sensor: 12-bit 125Hz PWM output signal proportional to the magnetic flux density and switch function

  • Measurement range from ±15mT to ±400mT

  • Low noise output signal (PWM jitter)

  • Programmable through the connector (supply, ground and output)

  • 16-bit customer ID number (48-bit Melexis ID for traceability purposes)

  • SOIC8 (surface-mount) package RoHS compliant

  • Lead-free component, suitable for lead-free soldering profile 260°C

  • In-range and out-of-range programmable output quiescent voltage (Voq)

  • Hall plate quadrature spinning current/chopper-stabilized amplifier

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