The HAL525SFA is a versatile programmable linear Hall-effect sensor manufactured by Micronas (now TDK-Micronas). This sensor is designed for highly accurate measurement of magnetic fields, offering programmable parameters for optimized performance in diverse applications. Its programmability enables customization for specific magnetic ranges and sensitivities.

Applications

• Automotive Position Sensing: Used in throttle position sensors, pedal position sensors, and steering angle sensors.
• Industrial Automation: Employed in linear and rotary encoders, valve position sensors, and robotic systems.
• Current Sensing: Integrated into current sensors for non-contact current measurement in motor control and power management systems.
• Medical Equipment: Used in medical pumps, diagnostic equipment, and patient monitoring systems.
• Consumer Electronics: Found in proximity detection, level sensing, and other applications requiring magnetic field measurement.

Features

• Programmable Sensitivity and Offset: Allows users to adjust the sensitivity and offset via programming to optimize performance for specific applications.
• Linear Output: Provides a linear analog output voltage proportional to the applied magnetic field.
• Temperature Compensation: Integrated temperature compensation circuitry ensures stable performance over a wide temperature range.
• Diagnostic Functions: Includes diagnostic features for detecting sensor faults and ensuring reliable operation.
• Small Package: Available in a small surface-mount package (SOT-89) for space-constrained applications.
• Wide Supply Voltage Range: Operates over a wide supply voltage range, typically from 4.5V to 5.5V.

Benefits

• High Accuracy: Provides highly accurate magnetic field measurements due to its linear output and programmable parameters.
• Flexible Configuration: Offers flexible configuration options to adapt to a wide range of applications.
• Reliable Performance: Delivers reliable performance in harsh environments due to its temperature compensation and diagnostic functions.
• Easy Integration: Easy to integrate into various systems due to its small package and simple interface.
• Cost-Effective Solution: Offers a cost-effective solution for precise magnetic field sensing.

Additional Details

The HAL525SFA typically has a magnetic range of ±50 mT to ±100 mT, depending on the programmed sensitivity. The output voltage is usually centered around half the supply voltage when no magnetic field is present. Programming is typically done via a serial interface. Protection features include overvoltage and reverse polarity protection. It operates over a temperature range of -40°C to +150°C. This sensor is commonly used in applications requiring precise and adjustable magnetic field measurement.