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AS5172E High Resolution Position Sensor

High-resolution on-axis magnetic angular position sensor with PSI5 output


  • 12-bit resolution @90° minimum arc
  • Low output noise, low inherent INL
  • Magnetic stray field immunity
  • Functional safety, diagnostics
  • AEC-Q100 Grade 1 qualified
  • System cost reduction – no PCB and additional components are needed


  • Resolve small angular excursion with high accuracy
  • Accurate angle measurement
  • Higher durability and lower system costs (no shield needed)
  • Enabler for safety critical applications
  • Suitable for automotive applications
  • SIP Package (System-in-Package)

Product parameters

Resolution [bit] 12 (14)
Interface PSI5
Output UART-over-PSI5
Max. Speed [rpm]
Overvoltage Protection Yes
Supply Voltage [V] 4.0 to 12.0
Temperature Range [°C] -40 to +125
Package SiP (system in package)
Automotive Qualified Yes
Longevity Program January 2031

General description

The AS5172 is a magnetic position sensor with a high-resolution 12-bit PSI5 output according PSI5 specification version 1.3 and 2.1.

Based on a hall sensor technology, this device measures the orthogonal component of the flux density (Bz) over a full-turn rotation and compensates for external stray magnetic fields with a robust architecture based on a 14-bit sensor array and analog front-end (AFE). A sub-range can be programmed to achieve the best resolution for the application. To measure the angle only a simple two-pole magnet rotating over the center of the package is required. The magnet may be placed above or below the device. The absolute angle measurement provides an instant indication of the magnet’s angular position. The AS5172 operates up to a voltage of 16.5V and is protected against overvoltage up to +20V. In addition, the supply pins are protected against reverse polarity up to – 18V.

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

Technical documents

Type Description Language
Datasheet AS5172E_AS5172F Datasheet v1-02 English

Environmental documents

Type Description Language
RoHS Certificate RoHS Certificate_AS5172E Rev.2 English

Other information

Type Description Language
Block Diagram AS5172 Block Diagram English
Image SiP-Package_A4 Magnetic Field Lines
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