磁性位置传感器
智能感知， 精准定位
Allegro 的位置传感器可在严苛的汽车和工业环境中提供精确的无接触线性/旋转角度测量。这些传感器支持多种输出协议，可简化设计、降低系统复杂性，并能在安全关键型应用中实现高级诊断功能
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线性位置传感器 IC
我们的线性位置传感器可提供高精度的1D 位置感应，具有先进的线性化功能，并对气隙变化具有强大的抗扰性——适用于高精度、非接触式运动跟踪的应用。
角位置传感器 IC
Allegro 的 2D 角度传感器可提供模拟和超低延迟（~10 µs）的数字输出，以实现汽车、工业和机器人应用中的精确电机控制。我们的传感器符合 ASIL-D 标准、支持双芯片冗余以及低至 ±0.3° 的角度精度，可确保平稳、高效和可靠的运行。
3D 磁性传感器
借助 Allegro 的 3DMAG™ 多轴传感器，提升更高的机械设计灵活性和精度。这些传感器经过精心设计，可捕捉3D 空间中的复杂线性和角度运动，同时抑制杂散磁场
Documentation & Resources
Application Note
A1337/A1338 System Timing
AN296138 - The A1337 and A1338 are high-speed high-accuracy magnetic angle sensor ICs, ideal for motor position sensing. This application note provides a brief description of the internal signal processing delays of the A1337 and A1338 angle sensors.
Application Note
A31315 Slide-By Introductory Application Guide
AN296189 - The A31315 is a multi-axis Halleffect sensor with advanced integrated signal processing capabilities that simplifies the numerous design challenges that the systems designer faces.
Application Note
Output Protocols for Angle and Linear Position Sensors
AN296191 - This application note describes working principles, lists advantages and limitations, outlines communication rates/delays, and defines error reporting tactics for digital and analog protocols used in angle and linear position sensing.
Brochure
Brochure: Motor Position and Angle Sensing
The Allegro A33230 Hall-effect position and angle sensor IC is the smallest 3D Sine/Cosine sensor currently available in the market.
Application Note
Linearization and Two-Point Programming on the A31100 and A31102
AN296213 - This application note highlights the procedure for calculating the magnetic field compensation parameters through two-point programming and calculating the linearization coefficients using our available software tools with the intention of providing an easy-to-use guide to programming these sensor ICs.
Application Note
Short-Stroke Rotary Application of the A31315
AN296204 - This guide is intended to assist you in applying the A31315 Samples Programming Software to your short-stroke rotary application, such as a throttle-body, which uses the A31315 Advanced Linear Sensor and a target motion of 0° to 90°.
Application Note
A31315 Single Die Sensor Error Function - How to Use
AN296229 - The Allegro 3D magnetic sensing devices can be used in a wide range of applications where mechanical motion (linear or rotational) can be expressed by a changing magnetic angle. Read More.
Application Note
Non-Contact Based Controller Solutions
AN296227 - Implementing controller functions through non-contact solutions provides both performance and reliability advantages over typical contact-based input methods.
Guide
A31316 Evaluation Kit User Guide
The A31316 Evaluation Kit includes everything required to program and evaluate A31316 devices.
Application Note
CT310 Application Guide
Numerous applications in automotive, industrial, and consumer markets require monitoring of a rotating mechanical structure. The position sensing of the angle, speed, and direction of motor shafts and knobs are typical applications for angle sensors.
Application Note
TMR for Precision Linear Measurement
This paper covers the construction and operational principle of tunnel magnetoresistance (TMR)-based one-dimensional (1D) magnetic sensors produced by Allegro.
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.
Guide
A31315 Evaluation Kit User Guide
The A31315 evaluation kit includes everything required to start programming and evaluating A31315 devices. When used in accompaniment with the Allegro sample programmer, it provides easy evaluation and programming of the A31315 devices without the need for any additional hardware or software.