磁気ポジション センサー
モーション、角度、直線位置をよりスマートにセンシング
Allegro の位置センサは、過酷な車載および産業環境下で、高精度な非接触の直線および回転測定を実現します。複数の出力プロトコルに対応しているため、これらのセンサは設計を簡素化し、システムの複雑性を低減し、安全性が重視されるアプリケーションにおいて高度な診断機能を可能にします。
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リニア ポジション センサー IC
当社のリニアポジションセンサは、高度な線形化とエアギャップの変動に対する強い耐性により、高精度な1次元（1D）位置検出を実現します—精密な非接触モーショントラッキングが求められるアプリケーションに最適です。
角度ポジション センサー IC
Allegro の 2D 角度センサは、車載、産業、ロボットの各アプリケーションにおける高精度なモータ制御向けに、アナログおよび超低レイテンシー (~10 µs) のデジタル出力を提供します。当社のセンサは、ASIL-D 準拠、デュアルダイ冗長性、および最大 ±0.3° の角度精度により、スムーズで効率的、かつ信頼性の高い動作を保証します。
3 次元磁気速度センサー
Allegroの3DMAG™多軸センサは、浮遊磁場を排除しつつ3次元（3D）空間における複雑な直線運動および回転運動を捉えるように設計されており、機械設計の柔軟性と精度をさらに向上させます。
Documentation & Resources
Application Note
PCB Ground Plane Optimization for Coreless Current Sensor Applications
AN296277 - This application note provides guidelines on how a PCB ground plane around the sensor location should be designed to achieve optimum performances.
Application Note
Differential Hall-Effect Sensors: Safer and More Reliable for Two-Wheelers of the Future
AN296173 - The use of electronic controls for engine, transmission, and wheel speed in two- and three-wheeled vehicles is growing, particularly in developing nations. This trend is largely driven by mandates to improve air quality, fuel efficiency, and vehicle safety worldwide.
Video
Circular Vertical Hall Sensor IC Technology Overview
Allegro’s family of contactless Hall magnetic high resolution 360° angle sensor ICs are designed for safety critical automotive and industrial applications. With their system-on-chip (SoC) architectures, they provide fast output refresh rates and low signal path latency.
Application Note
Micro-Power Position Sensing in Cell Phone Applications
This note will show how to use the Allegro™ A1171 in a standard flip or slide phone, as well as techniques for sensing three positions using only one magnet and one Hall device in a multipurpose application.
Application Note
Slide By Sensing for Long Stroke applications using Allegro Angle Sensors
This application note is a guide through the design process for using angle sensor ICs for linear position sensing, including magnet choice and orientation, output linearization, and using sensor IC arrays for extending the measurement range.
Application Note
Using the A1330 in a Short Stroke Application
AN296163 - This application note is a guide for using the A1330 angle
sensor IC for short stroke rotational position sensing, including
information on magnet choice and orientation.
Application Note
Fuel Level Sensor Using Hall-Effect Sensor ICs
AN296152 - Hall-based fuel level sensor ICs are developed to provide high reliability and accurate fuel level sensing for automotive applications. The application of linear and angle sensor ICs for coil-based and digital cluster indicators is presented in this application note.
Application Note
Chopper-Stabilized Amplifiers With Track-and-Hold Signal Demodulator
The conventional signal demodulator of a chopper amplifier can be substituted by track-and-hold (T/H) and averaging functions. This arrangement provides offset cancellation without requiring low-pass filters and can ignore the residual offset generated by input spikes.
Application Note
Vehicle Safety Systems
Occupant safety is one of the most critical elements of the automobile design. As a result, safety systems continue to become more sophisticated in order to limit, and ultimately prevent, personal injury in the case of an accident.
Application Note
Bipolar Switch Hall-Effect ICs
Bipolar sensor ICs are designed to be sensitive switches. (Note that the term "bipolar" refers to magnetic polarities, and is not related to bipolar semiconductor chip structures.) Hall measurement, bipolar switching, hall switch.
Application Note
Low-Power and Turns-Count Sensing with the A1337 Angle Sensor IC
AN296116 - This application note covers the use of the Allegro A1337 angle sensor IC for battery powered applications (automotive or non-automotive) that require the sensor to operate in multiple mission modes.
Application Note
Advanced Programming with ASEK DLLs Harmonic Linearization
This application note describes the functions and the process flow the customer can use if the Allegro-provided software is not flexible enough or if custom software is to be used.
Application Note
Advanced On-Chip Linearization in the A1332 Angle Sensor IC
There are two linearization techniques offered in the A1332 angle sensor IC. The first is called Segmented Linearization, and the second is called Harmonic Linearization. handwheel position sensor
Application Note
Omnipolar Switch Hall-Effect IC Basics
There are four general categories of Hall-effect IC devices that provide a digital output: unipolar switches, bipolar switches, omnipolar switches, and latches. Omnipolar switches are described in this application note.
Application Note
Applying Harmonic Compensation to the A1335 Output Signal using On-Chip EEPROM and Allegro Applications Software
This application note will provide a step-by-step example for configuring harmonic output signal linearization using the A1335 angle sensor integrated circuit (IC). This example will make use of the Allegro A1335 Samples Programmer software, compatible with either the ASEK-20 or ASEK-21 programmer kit.
Application Note
Unipolar Hall-Effect Sensor IC Basics
There are four general categories of Hall-effect IC devices that provide a digital output: unipolar switches, bipolar switches, omnipolar switches, and latches. Unipolar switches are described in this application note.
Application Note
Digital Position Sensor ICs—Continuous-Time to Chopper-Stabilized Cross-Reference Guide
This application guide will outline the differences between the two sensor types and provide system designers with the tools needed in order to select the appropriate sensor for their system.
Application Note
A1340, A1341, and A1343 Sensor Temperature Compensation
AN296122 - Sensor output can change over temperature due to sensor imperfections or temperature-dependent properties of the magnetic system. The purpose of applying temperature compensation inside the sensor is to keep the sensor output value independent of the temperature and only dependent on the input magnetic field strength.
Application Note
Low Power and Turns-Count Sensing with the A1339 Angle Sensor IC
AN296139 - This application note covers the use of the Allegro A1339 angle sensor IC for battery-powered applications (automotive or non-automotive) that require the sensor to operate in multiple mission modes.
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
System Advantages of High-Resolution Wheel Speed Sensing
AN296228 - With the vehicle market trending toward autonomous driving in the near future, the need for high resolution in the wheel speed sensor (WSS) business becomes essential. Allegro, with input from market leaders, has released the first high-resolution wheel speed sensor (HRWSS) that targets this demand.
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
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
Calibration Algorithm for Optimal Angle Calculation
AN296224 -This document describes how to implement different possible calibration algorithms to achieve optimal accuracy in angle calculation for Allegro angle sensors with analog sine-cosine outputs.