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AS5161 - Magnetic Position Sensor

The AS5161 is immune to stray magnetic fields, enables functional safety, and has precise angle measurements


AS5161 is a contactless Hall-based magnetic position sensor created by ams for very accurate angular measurement over a full 360° turn. A sub-range can be programmed to achieve the best output characteristic for the application. A simple diametrical 2-pole magnet rotating on the center of the IC is required-the magnet may be placed above or below the IC. The AS5161 is a compact integrated solution which provides the absolute angle measurement with a resolution of 0.09° over a full revolution as PWM output signal. The internal 14-bit core of the AS5161 enables a new programming of the start and stop positions with a resolution of 0.02° to allow the finest system mechanical adjustments. High level of flexibility is guaranteed by the programmability through the UART interface shared with the output pin, to reduce the number of pins in the application. The angular output data can be linearized in the final production to further increase the precision of the measurement. With embedded overvoltage protection and reverse battery protection, the AS5161 can fulfill the most demanding automotive safety standards. ams's AS5161 - Magnetic Position Sensor

Features
  • 14-bit core resolution for fine user programming of the start and stop position
  • 12-bit resolution PWM output signal
  • User programmable clamping, diagnostic levels and transition point
  • Overvoltage, short-circuit and reverse battery protections
  • Failure detection mode for magnet placement monitoring and loss of power supply, indication of high voltage condition
  • High driving capability of resistive and capacitive loads
  • Broken GND and VDD detection over a wide range of different load conditions
  • Simple programming by provided programming hardware and software
  • Wide temperature range: -40°C to +150°C
  • SOIC8 package

Applications
  • Transmission gearbox position sensor
  • Valve position sensing
  • Contactless potentiometers
  • Height control in chassis ride
  • Pedal position sensing
  • Throttle position sensing
  • Tumble-flaps

Digi-Key P/N Manufacturer P/N Description  
AS5161-HSOP-500CT-ND AS5161-HSOP-500 POS SENSOR ROTARY 12-BIT 8-SOIC Datasheet
Available in Tape & Reel (-2-ND), Cut Tape (-1-ND), and custom Digi-Reel® (-6-ND)