Discover the next generation of magnetic sensing
高效功率转换
精确测量整个动态范围，提供更清晰的信号。
采用宽带隙晶体管
GAN 和 SiC 等宽带隙晶体管需要高带宽的电流传感器，XtremeSense TMR 在不牺牲精度和分辨率的情况下实现了这一点。
减少能源足迹
提供所有磁传感产品类别中最低的功耗。
隧道磁阻 (TMR) 技术
Discover the next generation of magnetic sensing
Efficient Power Conversion
Accurately measures the full dynamic range and provides a cleaner signal.
Adoption of Wide Bandgap Transistors
Wide bandgap transistors such as GAN and SiC require high bandwidth current sensors which XtremeSense TMR achieves without sacrificing accuracy and resolution.
Reduce the Energy Footprint
Delivers the lowest power consumption in any magnetic sensing product category.
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TMR is an ideal fit for high growth industries such as automotive, industrial and consumer goods that require higher accuracy, greater bandwidth and lower power consumption.
At the heart of XtremeSense TMR technology is a thin-film magneto-resistive device, which is called a “Magnetic Tunnel Junction” (MTJ). In its simplest form, the MTJ consists of two electric-conducting magnetic layers on either side of a thin but highly robust insulating layer. One magnetic layer has a fixed magnetic moment direction, while the other can change freely to follow the direction of the local magnetic field.
For more information about the performance advantages of TMR versus other magnetic sensing technologies, please read our From Hall Effect to TMR application note.
Dive into the electric current flow that creates the TMR advanced sensor and makes TMR possible.
The relative magnetization direction of the Free Layer and the Reference Layer determines the resistance of the MTJ. A parallel magnetization direction achieves the lowest possible resistance level. The anti-parallel magnetization direction enables the highest possible resistance level.
This variation in electrical resistance is then immediately detected and amplified to accurately sense the local magnetic field. This feature creates the TMR advanced sensor with higher sensitivity, lower power consumption, and stable characteristics.
TMR sensors more accurately measure the full dynamic range. These sensors have excellent working dynamic range, with high linearity, low hysteresis, and high sensitivity characteristics (that is, the magneto-resistive response curve has a steep slope).
Ready to experience the power of TMR? Contact sales and explore Allegro's extensive portfolio.
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Documentation & Resources
OnDemand Webinar
Precision Angle Sensing for Servo Motor Control and Robotics
Discover how Allegro MicroSystems' cutting-edge angle sensing solutions can enhance motor control, reduce maintenance, and improve machine precision. Watch today and take your motor control systems to the next level!
Blog
什么是 TMR？
在不断发展的技术进步形势下，有一个概念因其彻底改变各个行业的潜力而脱颖而出：隧道磁阻 (TMR) 技术。
Video
All About Circuits Tech Chat: The Next Generation of Magnetic Sensing with XtremeSense TMR Technology
Explore Allegro’s latest advancements in TMR magnetic sensing technology as All About Circuits' Dale Wilson chats with Ali Alaoui, Product Line Manager for Sensor Products at Allegro MicroSystems.
Blog
XtremeSense TMR 技术如何促进高效应用
现代应用需要功能更强大的解决方案，例如宽带隙 (WBG) 功率器件，从而提高了电流感应的性能要求。
Blog
随着需求的增长，太阳能逆变器将面临哪 5 大挑战？
随着对太阳能的需求不断增长，对于太阳能逆变器的需求也随之增长，太阳能逆变器在将太阳能电池板产生的直流电 (DC) 转换为交流电 (AC) 方面发挥着至关重要的作用。
Blog
The Power of Precision: Revolutionizing Switches and Latches with TMR Technology
This blog explores the benefits of TMR technology for switches and latches, highlighting how it's transforming these essential components.
Application Note
What is XtremeSense TMR
Many companies around the world are now featuring TMR based products in their respective portfolios, and acknowledging the benefits TMR brings to their offerings. However, because TMR is a relatively new technology there are major differences in the implementation and manufacturing of TMR, which can be seen in the final product performance figures.
Application Note
Non-Intrusive Current-Sensing Using TMR: A Comparison Between TMR Sensors, Sense Resistors, Hall-Effect Sensors, and Current Transformers
Tunnel magnetoresistance (TMR) offers a set of features that allows for its use as a current sensor. Specifically, the Allegro CT100 family of linear TMR sensors can be used as a surface-mount technology (SMT), nonintrusive device with great linearity and thermal performance.
Application Note
From Hall Effect to TMR
This paper compares legacy Hall-effect technology to xMR technology, specifically tunnel magnetoresistance (TMR) from Allegro MicroSystems.
Application Note
TMR for 2D Angle Sensing
This paper discusses the construction and operational principle of Allegro TMR-based angle-sensing technology. The main sources of angle error in two-dimensional (2D) sensors are explained.
Blog
为什么选择 TMR 技术？
TMR 技术代表了磁传感技术的范式转变。与依赖于电荷载体在外部磁场影响下的偏转的传统霍尔效应传感器不同，TMR 传感器利用隧道磁阻现象。
Technical Article
Allegro TMR: A Cutting-Edge Sensing Solution for Driving Automation and ADAS
P0225: As vehicle electrification has increased over the years in the automotive industry, standards such as SAE J3016TM have established levels of automation where automated driving elements have become increasingly adopted across broad classes of vehicles.
XtremeSense TMR 技术的核心是一个薄膜磁阻器件，称为“磁性隧道结”(MTJ)。在最简单的形式中，MTJ 由薄但非常坚固的绝缘层两侧的两个导电磁层组成。一个磁层具有固定的磁矩方向，另一个可以自由变化以跟随局部磁场的方向。
如需更多了解 TMR 对比其他磁传感技术的性能优势，请阅读我们的从霍尔效应到 TMR 应用说明。