Littelfuse TMR Digital Magnetic Switches
Manufacturer
Part #
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Littelfuse LF11215TMR / LF21112TMR SensorsDescription
Littelfuse TMR Digital Magnetic Switches integrate TMR and CMOS technology, available in bipolar or omnipolar versions. They feature a TMR magnetic sensor and CMOS signal processing circuitry for precise magnetic sensing, with low power operation. These switches are suitable for applications such as speed sensing, proximity switches, and utility meters.
Littelfuse TMR Digital Magnetic Switches
Introduction
The Littelfuse TMR Digital Magnetic Switches are advanced sensing devices that combine TMR (Tunneling Magnetoresistance) technology with CMOS signal processing. These switches are designed for low power consumption and high precision, making them ideal for various applications in sensing and measurement.
Part Description
Littelfuse TMR Digital Magnetic Switches come in two versions: bipolar (LF11215TMR) and omnipolar (LF21112TMR). They feature a TMR magnetic sensor integrated with CMOS circuitry, allowing for accurate magnetic field detection. The LF11215TMR operates at a low power consumption of just 1.5µA, while the LF21112TMR is ultra-low power at 200nA. Both models are housed in a compact SOT23-3 package and offer excellent thermal stability, fast response times, and high sensitivity to magnetic fields. The output of these switches toggles based on the magnetic field strength, providing reliable performance in various environments.
Applications
- Proximity switches
- Speed sensing
- Rotary and linear position sensing
- Utility meters (gas, water, heat)
Industries
- Consumer electronics
- Automotive
- Industrial automation
- Smart metering
- Robotics
Usage Ideas
- Smart Home Automation: Use the LF21112TMR to create a proximity sensor for automatic lighting systems that turn on when someone enters a room.
- Speed Detection in Robotics: Implement the LF11215TMR in a robotic application to measure the speed of rotating components, enhancing control and feedback mechanisms.
- Utility Metering: Integrate the TMR switches into water or gas meters to provide accurate readings and improve energy efficiency in smart grid applications.
Conclusion
The Littelfuse TMR Digital Magnetic Switches are versatile and efficient components suitable for a wide range of applications. Their low power consumption, high sensitivity, and compact design make them an excellent choice for modern electronic systems across various industries. Whether for consumer electronics, industrial automation, or smart metering, these magnetic switches provide reliable performance and precision.
