eVehicle Technology
Celera Motion

Precision Motion Control and Sub-System Solutions.

Aura™ Absolute Optical Encoder

Absolute Encoders for High Performance, High Volume Designs.

Aura optical encoder

Aura™ is a high resolution absolute encoder in an extremely small, low power SMT package. High accuracy and run speed, combined with wide alignment tolerances, deliver an optimal solution for high volume OEM designs.


  • Absolute position feedback
  • Small, low power SMT package
  • High resolution and accuracy
  • High run-speed
  • Wide alignment tolerances
  • Scale eccentricity compensation
  • Low communication latency
  • Comprehensive connectivity


Dimensions9.0 x 7.0 x 1.1 mm9.0 x 7.0 x 1.1 mm
Resolution*18-22 bit*± 12.5 to 200 nm
Latency< 5 μsec (BiSS-C)
< 5 μsec (SPI)
< 30 μsec (SSI)
< 5 μsec (BiSS-C)
< 5 μsec (SPI)
< 30 μsec (SSI)
Accuracy**± 0.005°± 2 μm
Repeatability1 LSB1 LSB
Speed83,721 rpm (with 18 mm scale)50 m/s
Input Voltage5 VDC ± 0.55 VDC ± 0.5
Supply Current45 mA, unterminated outputs45 mA, unterminated outputs
Operating Temperature-20 to 85° C-20 to 85° C
Weight1.5 g1.5 g
Standard Scales***18 to 63.5 mm OD9 to 195 mm

* Higher resolution can be achieved by increasing averaging sample size.
** Accuracy is specified using a glass scale with OD 51.8 mm (Rotary) and 80 mm measurable length (Linear).
*** Custom rotary and linear glass scales available – contact your local representative for more information.

Contact Information

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