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MLX90251 / Programmable linear Hall-effect sensor IC

The MLX90251 is a programmable linear Hall-effect sensor IC with ratiometric analog output. All magnetic response functions of the MLX90251 are fully programmable for versatility and system tolerances reduction (End-of-Line Calibration).

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

MLX90251 Features and benefits

  • Analog signal processing
  • Hall plate quadrature spinning current/chopper stabilized amplifier
  • Linear analog ratiometric output voltage
  • Adjustable output driver configuration
  • Programmable output quiescent voltage (Voq = Vout @ B = 0 Gauss)
  • Adjustable thermal Voq drift
  • Programmable magnetic sensitivity
  • Programmable low-pass filter
  • Programmable clamping voltages
  • Programmable temperature compensation
  • Adjustable sensitivity temperature coefficient (first and second order)
  • Melexis ID number
  • Programmable customer ID number
  • 4-SIP-VA package (through-hole)
  • Lead-free package
  • Programmable with the PTC-04 and the PTC-04-DB-HALL01 daughterboard

MLX90251 Application Examples

  • Linear Position Sensing
  • Rotary Position Sensing
  • Current Sensing
  • Magnetic Field Measurement
MLX90242 Melexis

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 MLX90251 has a very stable thermal compensation for both the sensitivity and the Voq over a broad temperature range.

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