Texas Instruments’ TMAG5134 in-plane Hall effect switch features an integrated magnetic concentrator, capable of detecting magnetic fields as low as 1mT in applications such as door/window sensors, personal electronics, and appliances.
Latest Developments
Texas Instruments (TI) has launched an industry-leading, highly sensitive in-plane Hall effect switch designed for position sensing applications, providing engineers with a cost-effective and user-friendly alternative to magnetoresistive sensors. The TMAG5134 Hall effect switch from TI features an integrated magnetic concentrator that can detect magnetic fields as low as 1mT in applications such as door/window sensors, personal electronics, and appliances. With its exceptional sensitivity, smaller magnets can be used, further reducing system-level costs. Additionally, the in-plane sensing capability of the TMAG5134 allows it to detect magnetic fields parallel or horizontal to the printed circuit board, offering engineers greater design flexibility.
Key Insights
Today, in the pursuit of high-sensitivity, low-power, compact position sensing designs, engineers still rely on reed switches or tunnel magnetoresistance (TMR), anisotropic magnetoresistance (AMR), or giant magnetoresistance (GMR) sensors. However, these technologies are often costly and involve complex manufacturing processes, as they require specialized materials and fabrication techniques. In contrast, Hall effect technology does not require special manufacturing processes, enabling engineers to significantly reduce design costs and accelerate time-to-market.
Historically, due to the limited sensitivity of Hall effect switches, designers have not considered them as viable alternatives to TMR, AMR, GMR, or reed switches. The launch of TI’s TMAG5134 marks a significant transformation in the position sensing market: engineers can achieve higher sensitivity than traditional Hall effect sensors without the additional costs and complexities associated with magnetoresistive sensors.
“The electronic products we encounter in our daily lives, from laptops to smart home systems, rely on sensors to perceive their surroundings and make decisions,” said Jason Cole, Vice President and General Manager of TI’s Sensing Products. “For decades, TI’s sensing product portfolio has enabled engineers to achieve higher precision, energy efficiency, and reliability in their designs. The TMAG5134 Hall effect switch is built on years of innovation, providing a simplified, cost-effective solution that creates new possibilities for design engineers across various industries.”
More Details
The TMAG5134 Hall effect switch consumes an average of only 0.6µA, helping to extend battery life in sensing applications. Its integrated magnetic concentrator technology amplifies the sensor signal without the need for large current biasing devices.
TI’s magnetic sensing product portfolio offers engineers a variety of switches, latches, and single-axis and multi-axis linear and angular sensors to meet their design needs. With devices like the TMAG5134 Hall effect switch and comprehensive development resources, this portfolio is designed to simplify the design of high-performance sensing technologies, making them easier to implement.
Availability: The TMAG5134 is manufactured at TI’s own 12-inch wafer fab, is now in mass production, and can be purchased through TI.com. Engineers can leverage TI’s comprehensive support resources to accelerate development, including evaluation modules and the free TI Magnetic Sensing Simulator (TIMSS) tool. With this tool, designers can quickly simulate magnetic field behavior and sensor output based on specific sensor magnet configurations in their designs.