Reference Design Library > Sensor Solutions > Other Sensing Solutions > AS5048A-EK-AB-STM1.0: Magnetic Position Sensor

AS5048A-EK-AB-STM1.0: Magnetic Position Sensor

Summary

The AS5048A evaluation kit is designed to adapt standard size stepper motors with a contactless rotary position sensor for easy and fast evaluation of the IC in the application. The evaluation kit includes the PCB with soldered IC, 4 magnet holders with different shaft diameters and the allen key. The 4 distance bolts and the motor are not included. On the connector you get the SPI Serial Peripheral Interface and PWM Pulse Width Modulation output signals.

The AS5048 is an easy to use 360° angle position sensor with a 14-bit high resolution output. The maximum system accuracy is 0.05° assuming linearization and averaging is done by the external microcontroller.

The IC measures the absolute position of the magnet’s rotation angle and consists of Hall sensors, analog digital converter and digital signal processing. The zero position can be programmed via SPI or I²C command. Therefore no programmer is needed anymore. This simplifies the assembly of the complete system because the zero position of the magnet does not need to be mechanically aligned. This helps developers to shorten their developing time. The sensor tolerates misalignment, air gap variations, temperature variations and as well external magnetic fields. This robustness and wide temperature range (-40°C up to +150°C) of the AS5048 makes the IC ideal for rotation angle sensing in harsh industrial and medical environments. Several AS5048 ICs can be connected in daisy chain for serial data read out. The absolute position information of the magnet is directly accessible over a PWM output and can be read out over a standard SPI or a high speed I²C interface. AS5048A has a SPI interface, AS5048B I2C interface. Both devices offer a PWM output. An internal voltage regulator allows the AS5048 to operate at either 3.3 V or 5 V supplies.

Specifications

Manufacturer ams OSRAM
Category Sensor Solutions
Sub-Category Other Sensing Solutions
Eval Board Part Number AS5048A-EK-AB-STM1.1-ND
Eval Board Supplier ams-OSRAM USA INC.
Eval Board Normally In Stock
Purpose Motor Position Sensor
Range 360 degrees
Sensing Method Contactless Magnetic
Voltage In 5 V
Features I²C Interface
PWM Interface
SPI Interface
Design Author AMS
Component Count + Extras 3 + 1
Main I.C. Base Part AS5048
Date Created By Author 2014-08
Date Added To Library 2015-04

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Support Documents & Media

AS5048A(B)-EK-AB-STM1.0 - User Guide AS5048A/B - Datasheet

Media

AS5048_EK_AB_Schematic_Full.png AS5048_EK_AB_Board_Full.jpg AS5048_EK_AB_Block_Diagram_Full.png