General Description
The MLX90251 is a CMOS Programmable, Ratiometric Linear Hall Effect sensor IC. The linear output voltage is proportional to the magnetic flux density. The ratiometric output voltage is proportional to the supply voltage. The MLX90251 possesses active error correction circuitry, which virtually eliminates the offset errors normally associated with analog Hall Effect devices. All the parameters of the MLX90251 transfer characteristic are fully programmable. The VOQ (VOUT @ B = 0 Gauss), the Sensitivity, the slope polarity, the Output Clamping levels, the thermal Sensitivity drift, the internal bias point and low-pass filter are all programmable in end-user applications. The MLX90251 has a very stable thermal compensation for both the Sensitivity and the VOQ over a broad temperature range. For traceability purpose the MLX90251 will carry a unique ID number programmed by Melexis and 24 bits of EEPROM memory are allocated for a user programmed serial number.

Features and Benefits
*Analog Signal Processing
*Quad Switched Hall Plate
*Chopper Stabilized Amplifier
*Linear Analog Ratiometric Output Voltage
*Programmable Output Quiescent Voltage (VOQ) -100%VDD…200%VDD Range
*Programmable Magnetic Sensitivity
*Programmable Low Pass Filter
*Programmable Clamping Voltage
*Programmable Temperature Compensation
*Melexis ID Number
*Programmable Customer ID Number
*Lead-free package

Application Examples
*Linear Position Sensing
*Rotary Position Sensing
*Current Sensing
*Magnetic Field Measurement

MLX90251LVA-2, MLX90251EGO-2

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