The TLV4961-1TA is a high-precision Hall-effect latch from Infineon Technologies, designed for reliable magnetic field detection. It features a single Hall element and provides a digital output signal indicating the presence of a magnetic field exceeding a predefined threshold. This sensor is well-suited for applications requiring precise and reliable switching based on magnetic field detection, such as position sensing, proximity detection, and motor control.

Applications

• Brushless DC (BLDC) Motor Control: Used for rotor position detection in BLDC motors.
• Position Sensing: Implemented in various position sensing applications such as door and lid closure detection.
• Proximity Detection: Employed in proximity sensors for detecting the presence of nearby objects.
• Flow Meters: Used in flow meters to detect the rotation of impeller blades.
• Rotary Encoders: Integrated into rotary encoders for angular position measurement.

Features

• Hall-Effect Latch: Provides a stable output signal once the magnetic field exceeds the threshold.
• High Sensitivity: Detects small magnetic fields with high accuracy.
• Digital Output: Offers a digital output signal for easy interface with microcontrollers.
• Wide Operating Voltage Range: Operates over a wide voltage range, providing flexibility in system design.
• Small Package: Available in a compact package for space-constrained applications.
• Reverse Polarity Protection: Includes reverse polarity protection to prevent damage from incorrect wiring.

Benefits

• Reliable Switching: Hall-effect latch ensures stable and reliable switching behavior.
• Accurate Detection: High sensitivity enables precise detection of magnetic fields.
• Easy Integration: Digital output simplifies interfacing with microcontrollers and other digital systems.
• Flexible Design: Wide operating voltage range allows for use in various applications.
• Compact Footprint: Small package size enables integration into space-limited designs.
• Robust Protection: Reverse polarity protection enhances system reliability.

Additional Details

The TLV4961-1TA operates based on the Hall effect principle. When a magnetic field is applied perpendicular to the sensor, it generates a voltage proportional to the magnetic field strength. The sensor includes a Schmitt trigger to provide a clean and stable digital output signal. Key specifications include the operating voltage range, magnetic field thresholds, and operating temperature range. Proper understanding of these parameters is critical for successful implementation in a specific application.