Small Optical Encoder Modules

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The HEDS-9700 series is a high performance, low cost, optical incremental encoder module. When operated in conjunction with either a codewheel or codestrip, this module detects rotary or linear position. The module consists of a lensed LED source and a detector IC enclosed in a small C-shaped plastic pack-age. Due to a highly collimated light source and a unique photo-detector array, the module is extremely tolerant to mounting misalignment.

The two channel digital outputs and 5V supply input are accessed through four solder-plated leads located on 2.54 mm (0.1 inch) centers.

The standard HEDS-9700 is designed for use with an 11 mm optical radius codewheel, or linear codestrip. Other options are available. Please contact factory for more information.


  • Small Size
  • Low Cost
  • Multiple Mounting Options
  • Wide Resolution Range
  • Linear and Rotary Options Available
  • No Signal Adjustment Required
  • Insensitive to Radial and Axial Play
  • -40 degrees C to 85 degrees C Operating Temperature
  • Two Channel Quadrature Output
  • TTL Compatible
  • Single 5V Supply
  • Wave Solderable

Lifecycle Status


Lifecycle Status



  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Samples Available No
RoHS6 Compliant Y
Motion Type Rotary
Optical Radius (mm) 11.0
Resolution 400
Resolution (Unit of Measure) CPR
Resolution 400 CPR


Data Sheet (1) i


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