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AS5311 Linear Position Sensor

12-Bit Linear Incremental Position Sensor With Digital Interface and ABI, PWM Output

The AS5311 is an incremental position sensor for linear and rotary off-axis applications based on contactless magnetic sensor technology. To measure position and motion a multi-pole magnet strip or ring has to be used. There are 4096 pulses (12-bit) per 2.0 mm pole pair length on the standardized quadrature output interface with an index pulse (=ABI-interface) with a maximum speed of 650mm/sec.

Block diagram of the AS5311 linear incremental position sensor with digital interface

Key Features

  • Contactless motion and position sensing
  • High resolution
  • No programmer needed

Key Benefits

  • Highest reliability and durability in harsh environments
  • Control of high precision movements
  • Lower material cost (no magnetic shielding needed)

Applications

  • Robotic joint position
  • Motor speed and motion control for off-axis applications
  • Control of XYZ - tables
  • Replacement of linear and rotary optical sensor systems

AS5311 Product Facts

Resolution 12-bit
Minimum pole pair length 2mm
Interfaces [] SSI
Output [] ABI, PWM
Max speed [m/s] 0.65
Supply voltage [V] 3.3 or 5.0
Temperature range [°C] -40 to +125
Package TSSOP-20
Automotive qualified
Remark for linear: use magnetic strip
for off-axis: use ring magnet