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MLX90251
Programmable Linear Hall Effect Sensor
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The MLX90251 is a Programmable Linear Hall Effect sensor IC fabricated utilizing Silicon-CMOS technology. It 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 for even greater versatility.
The Voq (Vout @ B = 0 Gauss), sensitivity, direction of slope, the magnitude of sensitivity drift over temperature (TC - 1st & 2nd order), the clamping level, the thermal Voq drift and the bandwidth, are all programmable.
The ratiometric output voltage is proportional to the supply voltage. When using the supply voltage as a reference for an A/D converter, fluctuations of ±10% in supply voltage will not affect accuracy. When programmed for a conventional sensitivity (with a positive gain), the voltage at the output will increase as a South magnetic field is applied to the branded face of the MLX90251. Conversely, the voltage output will decrease in the presence of a North magnetic field. The MLX90251 has a very stable thermal compensation for both the sensitivity and the Voq over a broad temperature range.
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Features and Benefits
- Analog Signal Processing
- Quad Switched Hall plate/Chopper Stabilized Amplifier
- ratiometric output Quiescent Voltage Voq
- Adjustable Sensitivity
- Adjustable Low-pass Filter
- Adjustable Output Driver Configuration
- Adjustable Clamping Voltage
- Adjustable Thermal Voq Drift
- Adjustable Sensitivity Temperature Coefficient (1st & 2nd order)
- Adjustable Internal Bias Point
Product Applications
Side Mirror
Wiper Systems
Brake Pedal Position Sensor
Electric Power Assisted Steering
Electronic Stabilty Program (ESP)
Ride Height Position Sensing
Fuel Level Sensor
Valve Position Sensing
EGR Valve Position
Fuel Level Sensor
Fuel/Oil/Water Pumps and Cooling Fans
Transmission
Assets
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