AS5045B

series introduction

# AS5045B Product Series Introduction

## 1. Overview
The AS5045B product series represents a cutting - edge line of magnetic angle sensors developed by ams AG, a leading provider of high - performance sensor solutions. These sensors are designed to offer accurate, reliable, and cost - effective angle measurement in a wide range of applications, leveraging advanced magnetic sensing technology to meet the demanding requirements of modern industrial, automotive, and consumer electronics systems.

## 2. Key Features

### 2.1 High Precision
- The AS5045B sensors are capable of providing high - resolution angle measurement. With a resolution of up to 12 - bit (4096 steps per revolution), they can accurately detect even the smallest angular changes. This high precision makes them ideal for applications where precise control and positioning are crucial, such as robotic arms, servo motors, and steering systems in automotive applications.
- The sensors have a low angular error, typically within ±0.3° over the full 360° range. This ensures that the measured angle closely matches the actual angle, reducing errors in control systems and improving overall system performance.

### 2.2 Robustness
- They are highly resistant to external magnetic fields. The AS5045B uses a differential sensing principle, which helps to cancel out the effects of stray magnetic fields. This makes the sensors suitable for use in environments where there are strong magnetic interferences, such as near electric motors or power lines.
- The sensors are also designed to withstand harsh operating conditions. They have a wide operating temperature range, typically from - 40°C to + 125°C, and are resistant to mechanical vibrations and shocks. This makes them reliable in industrial and automotive applications where the sensors may be exposed to rough handling and extreme environmental conditions.

### 2.3 Compact Design
- The AS5045B sensors come in a small form - factor package, which allows for easy integration into various systems. The compact design is especially beneficial in applications where space is limited, such as in handheld devices or small - sized motors.
- The sensors can be surface - mounted on printed circuit boards (PCBs), enabling automated assembly processes and reducing manufacturing costs.

### 2.4 Digital Output
- These sensors provide a digital output interface, such as SPI (Serial Peripheral Interface) or PWM (Pulse - Width Modulation). The digital output simplifies the connection to microcontrollers and other digital systems, eliminating the need for additional analog - to - digital conversion circuits.
- The digital interface also allows for easy configuration and calibration of the sensors. Users can adjust parameters such as the zero - angle position and the output resolution through the digital interface, providing flexibility in different application scenarios.

## 3. Working Principle
The AS5045B sensors are based on the Hall - effect principle. They consist of a magnetic field - sensitive element (Hall sensors) and signal - processing circuitry. When a permanent magnet is placed in close proximity to the sensor, the magnetic field generated by the magnet is detected by the Hall sensors.
The Hall sensors convert the magnetic field strength into an electrical signal. The signal - processing circuitry then processes this electrical signal to calculate the angular position of the magnet relative to the sensor. The differential sensing technique used in the AS5045B helps to improve the accuracy and reduce the influence of external magnetic fields.

## 4. Applications

### 4.1 Industrial Automation
- In industrial robots, the AS5045B sensors are used to measure the angular position of the robot joints. This information is crucial for precise control of the robot's movement, enabling it to perform complex tasks with high accuracy.
- In servo motors, the sensors are used to provide feedback on the motor's shaft position. This feedback is used by the motor control

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Datasheets

• AS5045B

Partlist