Tunnel magnetoresistance (TMR) is a magnetoresistive effect that occurs in a magnetic tunnel junction (MTJ), which is a component consisting of two ferromagnets separated by a thin insulator. If the insulating layer is thin enough (typically a few nanometres), electrons can tunnel from one ferromagnet into the other.

2025年1月23日 · Allegro’s XtremeSense™ TMR technology (Tunnel Magnetoresistance) provides the highest magnetic sensitivity, the lowest power consumption, and the smallest size by comparison to other magnetic technologies such as Hall, AMR, and GMR.

Compared to sensors using a hall element, TDK TMR sensors feature extremely high sensitivity and high output, and realize superior sensing capability as wheel velocity sensors for ABS (anti-lock braking) systems.

This article explores TMR sensor technology, including its principles, advantages, comparison with AMR and GMR sensors, and application scenarios, highlighting its potential and importance in modern intelligent systems.

Tunneling Magneto-Resistance (TMR) sensors are at the forefront of magnetic sensing technologies, offering exceptional sensitivity and efficiency. These sensors work on the principle of electron tunneling between ferromagnetic layers, providing precise magnetic field detection.

Industrial automation, TMR technology finds applications in position sensing, proximity detection, and current monitoring. The robustness of TMR sensors makes them well-suited for demanding industrial environments, where precision and reliability are …

High-Precision TMR Angle Sensors with Digital Output TAD214x and TAD4140 are TMR angle sensors which al-low absolute angle measure-ment of up to 360°. Based on the Tunnel Magneto-Resistive (TMR) effect, they offer high sensitivity and best angle ac-curacy needed for demanding automotive applications. The internal digital signal pro-

2024年2月15日 · The sensing accuracy, temperature resistance and compact size of TMR sensors are just some of the reasons they are being used in these applications. Automation in particular requires a high level of accuracy to ensure vehicles and machines move as desired and in a safe manner.

Allegro TMR-based 1D sensors offer the best alternative to older magnetic sensor technologies. Advantages include lowest power consumption, low linearity error, and a cost-effective solution due to the high CMOS integration capabil-ity, which enables a monolithic integrated circuit.

2018年9月24日 · What are TMR sensors and what applications are they best suited to? This article provides a snapshot of this sensor type and what TMR-based components are available for designers.