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AS5171 High Resolution Position Sensor

High-resolution on-axis magnetic angular position sensor


  • 12-bit resolution @90° minimum arc
  • Low output noise, low inherent INL
  • Magnetic stray field immunity
  • Functional safety, diagnostics, dual redundant chip version
  • AEC-Q100 Grade 0 qualified


  • Resolve small angular excursion with high accuracy
  • Accurate angle measurement
  • Higher durability and lower system costs (no shielding needed)
  • Enabler for safety critical applications
  • SiP package (sensor + decoupling capacitors for ESD/EMC)

Product parameters

Resolution [bit] 14 or 12
Output Analog ratiometric or PWM
Max. Speed [rpm]
Overvoltage Protection Yes
Supply Voltage [V] 5.0
Temperature Range [°C] -40 to +150
Package SiP (system in package)
Automotive Qualified

General Description

The AS5171 is a high-resolution angular position sensor for precise absolute angle measurement. The AS5171 is available with an analog output interface (AS5171A) or a digital output interface (AS5171B). The AS5171A and AS5171B are available in a SIP package (system in package). The package has integrated the AS5171 sensor die together with the decoupling capacitors necessary to pass system level ESD and EMC requirements. No additional components and PCB on the sensor side is needed. The product is defined as SEooC (Safety Element out of Context) according to ISO26262.

Magnets cannot be ordered at ams directly. Please find a list of recommended magnet suppliers.

This product suits for the following applications:

  • Brake and gas pedals
  • Throttle valve and tumble flaps
  • Steering angle sensors
  • Chassis ride
  • EGR
  • Fuel level measurement systems
  • 2/4WD switch
  • Contactless potentiometers


Title Category Headline Buy
SD4Y-PP Accessories Production Programmer SD4Y
AS5xxx-EK-USB-PB Accessories Programming Board for AS5xxx

Technical Documents

Name Type Description Version Language
PositionSensors_AN000304_1-00.pdf Application Note Tape & Reel Packing Information 1-00 English
AS5171_BD000226_1-00.png Block Diagram AS5171 Block Diagram 1-00 English
AS5171_DS000413_6-00.pdf Datasheet Document version 1-06 6-00 English
PositionSensors_FS000210_1-00.pdf Factsheet Accurate Position Sensing in demanding Automotive Applications 1-00 English
AS5170-71_AS5270_FS000178_1-00.pdf Factsheet Magnetic Position Sensors with System-in-Chip technology 1-00 English
AS5161-62_AS5170-71_AS5261-62_PD000333_1-00.png Other Product Document AS5xxx-EK-USB-PB Image 1-00 English
AS5xxx_UG000387_1-00.pdf User Guide SD4Y Production Programmer Manual 1-00 English

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