6-Channel Incremental Opto Encoder

iC-LTA is an advanced optical encoder IC
featuring an array of photosensors which are evaluated by an on-chip interpolation circuit.

The device provides differential A/B and index tracks, and 3 tracks to generate block commutation signals (UVW).
The line count and the optical radius is free and determined by the code disc design applied.

Operating mode and index gating options are adjusted at two multi-level inputs. An averaging LED power controller outbalances aging and temperature effects.

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  • Monolithic photodiode array with excellent signal matching
  • Very compact size for small encoders
  • Moderate track pitch for relaxed assembly tolerances


  • Incremental encoder
  • Brushless DC motor commutation
  • Industrial drives

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