AS5145B-EK-AB-STM1.0: 360º Magnetic Position Sens


The AS5145B Eval-Kit is designed to adapt standard size stepper motors with a contactless rotary position sensor. Rotation of the magnet holders is sensed by the rotary position sensor, soldered on the PCB board.

The AS5145 is a contact less magnetic rotary encoder for accurate angular measurement over a full turn of 360 degrees.

It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.

To measure the angle, only a simple two-pole magnet, rotating over the center of the chip, is required. The magnet can be placed above or below the IC.

The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879º = 4096 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal.

An internal voltage regulator allows the AS5145 to operate at either 3.3V or 5V supplies.


Manufacturer ams
Category Sensor Solutions
Sub-Category Other Sensing Solutions
Eval Board Part Number AS5145B-EK-AB-STM1.0-ND
Eval Board Supplier ams
Eval Board Normally In Stock
Purpose Motor Position Sensor
Range 360 degrees
Sensing Method Contactless Magnetic
Voltage In 0.3 ~ 7 V
Features Fault Indication
LDO Regulator(s), On-Chip
PWM Interface
Status Indication
Design Author AMS
Component Count + Extras 4 + 2
Main I.C. Base Part AS5145B
Date Created By Author 2014-01
Date Added To Library 2015-03

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