磁性位置传感器
系统设计人员非常看重我们的非接触式绝对位置传感器 IC。我们强大的 EEPROM 可编程 IC 可满足行程和旋转位置传感应用在整个汽车电压和温度范围内的精度要求。
我们也深知线束成本和深度系统诊断对我们的客户很重要。我们提供各种信号输出协议，包括模拟、PWM、2 线、SPI、I2C 和极快的共享 SENT 协议。
我们独有的符合 ASIL-D 标准的双晶片解决方案适用于 ADAS 和高级安全应用。
我们也深知线束成本和深度系统诊断对我们的客户很重要。我们提供各种信号输出协议，包括模拟、PWM、2 线、SPI、I2C 和极快的共享 SENT 协议。
我们独有的符合 ASIL-D 标准的双晶片解决方案适用于 ADAS 和高级安全应用。
Browse by category
1D Linear Position Sensors
Contactless position sensors are used almost everywhere- from game controllers to autonomous vehicles. And Allegro's linear position sensors are used almost everywhere, too.
2D Angle Position Sensors
Allegro's low latency, high accuracy angle sensors are ideal for high speed motor applications. With signal path latency of only 10 microseconds, our ICs can work at rotational speeds up to 30,000 RPM.
3D 磁性传感器
我们的 3DMAG™ 位置传感器是可靠、高性能、真正的 3D 磁性感应解决方案。
Featured Products
A31315
3D Hall-Effect Sensor for Rotary and Linear Position Measurement
A31301
Low Power 3D Magnetic Position Sensor with SPI & I²C Interfaces and Angle Output
A31010
具有睡眠模式的小型低功耗单向线性霍尔效应
CT815x
Product family of Tunnel Magneto-resistance (TMR) digital latches and analog sensors designed for consumer and industrial applications
Documentation & Resources
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
How to Determine and Remove Systematic Channel Errors Using 3D Linear Angle Sensors
AN296201-This application note intends to describe the channel level errors and their impact on reported angle in 3D linear angle sensors when using the device in an on-axis rotary application. This document will also describe how to compensate for these errors using internal customer settings.
Application Note
Reducing the Influence of External Fields and Crosstalk for Contactless Current Sensing
Magnetic sensors are useful for measuring electrical current in conductors because the current flow generates a magnetic field around the conductor that can be measured without making electrical contact with the conductor.
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.
Application Note
Minimizing Angle Error in 2D Magnetic Sensors by Nonorthogonality Correction
Magnetic sensors can be used for rotation detection. For this, usually a small magnet is attached to a shaft (or any other rotational axis). Thus, when the shaft rotates, the magnetic sensor detects the change of the magnetic field orientation. Such magnetic sensors are also called two-dimensional (2D) magnetic sensors.
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.
Application Note
Advanced On-Chip Linearization in the A1335 Angle Sensor IC
AN296127 - This document shows how magnetic-input-related errors in excess of ±20 degrees can be linearized by the A1335 to as low as ±0.3 degrees—roughly a 65× improvement.
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
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.
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
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 DLL Programming using MATLAB on Windows OS
AN296260 - This application note describes procedures for programming the A31315 DLL using MATLAB on Windows OS.
Application Note
AN296330 - How to Select the Best Switch or Latch
AN296330 - This application note is intended to provide a step-by-step process to help designers pick the right Allegro switch or latch part for their specific application. This application note details the different parameters that define Allegro switches and latches to help designers identify the most appropriate part for their needs.
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.
Technical Article
Magnetic Position Sensors Efficiently Drive E-Bike with Pedal Assist Systems
This technical article describes two designs for the pedal-rate measurement: a design using a pair of one-dimensional (1D) magnetic position sensors, which is common; and a two-dimensional (2D) magnetic speed and direction sensor design.