Broadcom AEDR-850x 3-Ch Reflective Incremental Encoders

Broadcom AEDR-850x 3-Ch Reflective Incremental Encoders offer digital outputs employing reflective technology for motion control purposes. Broadcom AEDR-850x  Reflective Encoders each house an LED light source and photo-detecting circuitry in a single package. The small size allows the encoders to be used in a wide range of miniature commercial applications where size and space is a primary concern. These encoders offer two-channel quadrature digital outputs and a third channel, index digital outputs. These outputs are TTL compatible and can be interfaced directly with most signal processing circuitries, providing for great design flexibility and easy integration into existing systems. The Reflective Encoders are designed to operate over a temperature range of -20°C to +85°C and so are suitable for both commercial and even industrial applications.


  • Surface mount leadless package 3.95mm (L) x 3.4mm (W) x 0.9562mm (H)
  • Built-in interpolator, factor of 1x, 2x and 4x selectable via external pinouts
  • TTL compatible
  • Single 5V supply
  • -20°C to +85°C absolute operating temperature
  • 304 (lines/inch) or 12 (lines/mm) Encoding resolution


  • Close-loop stepper motors
  • Miniature motors
  • Printers
  • Copiers
  • Card readers
  • Scanners
  • Projectors
  • Consumer and industrial product applications
  • Other high-volume applications

Typical Application

Broadcom AEDR-850x 3-Ch Reflective Incremental Encoders
Published: 2011-05-05 | Updated: 2022-03-11