Quality Standards and Environmental Certifications

2D Angle Position Sensor ICs

Safety and technical innovation are at the heart of our angle sensor designs. We provide the lowest latency digital output angle sensors in the market, allowing you to achieve smoother and more efficient motor control. We also offer some of the highest-performance, cost-optimized angle sensor ICs for your emerging personal mobility, robotics, and industrial automation applications.
Our unique, dual-die ASIL-D-compliant solutions are ideal for your ADAS and advanced safety applications.

Documentation & Resources

Application Note

Angle Error Correction with the A33230

This application note describes the mathematics to convert the analog sine/cosine outputs of the A33230 into an angular position.

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Application Note

Two-Point-Programming for the A1330

AN296199 - This application note serves as a guide for using a two-point programming algorithm to calculate and program the values needed for short-stroke rotational position sensing with the A1330 angle sensor IC.

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Application Note

Using the A1335 in a Short Stroke Application

AN296166 - This application note is dedicated to short-stroke magnetic applications using Allegro angular position sensors based on circular vertical Hall (CVH) technology. Analyses and data used in this document are based on the A1335 angle sensor IC.

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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.

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Application Note

Guidelines for Using Allegro Angular Sensors

Many applications in different industries, such as in industrial automation and automotive sensors and actuators, require monitoring the angle of a rotating shaft either in an on-axis or off-axis arrangement. This application note is dedicated to a review of on-axis magnetic applications.

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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.

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Application Note

3D Linear or 2D Angle Sensing with the ALS31300 and ALS31313 Hall-Effect ICs

AN296140 - This application note describes the use of the ALS31300 and ALS31313 3D Linear Hall-Effect Sensor integrated circuits (ICs) from Allegro MicroSystems for 3D linear sensing and 2D angle sensing applications.

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Application Note

Advanced Power Management Using the ALS31300 and ALS31313 3D Hall-Effect Sensor ICs with I2C Output

AN296144 - This application note discusses the unique and advanced low power modes available on the ALS31300 and ALS31313 3D Linear Hall-Effect Sensor ICs with I2C output available from Allegro MicroSystems.

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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.

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Application Note

Microcontroller-Based Linearization of Angular Sensor ICs

AN296160 - Magnetic angle sensors are often a good choice for fast, reliable, contactless measurement of the angular position of a system, especially in dirty environments where optical encoders may not be a good fit.

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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 ...

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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.

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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.

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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.

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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.

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