Broadcom AEDR-9920 three-channel reflective incremental encoder

The AEDR-9920 miniature reflective incremental encoder offers three-channel (ABI) differential digital outputs for linear and rotary applications starting at 4.6 mm optical radius with larger spatial (misalignment) tolerance up to 500 µm. A smaller optical radius can be achieved with a lower spatial and support the lower resolution with a spiral code wheel. The differential or TTL-compatible output signals can be directly interfaced to most signal processors. The compact size and programmable resolution provide easy integration into small motors, actuators, linear stages, and medical equipment.

Key features

• Miniature size – 4x4mm
• For miniature, small motor, and high temp applications
• Built-in pin selectable and user SPI reprogrammable interpolations
• Suitable for linear and rotary applications

Additional features

• Next-generation miniature reflective incremental encoder:
  • High operating temperature, resolution, and frequency
• Operating Voltage 3.3 V and 5 V
• Encoding line density: 225 LPI (8.86 LPmm)
  • Example: Rotary RoP 4.6 mm, to achieve 256 CPR
• Higher resolutions with pin selectable interpolation up to 256x
  • 65,536 CPR or 262,144 PPR after quad
• User SPI reprogrammable interpolation from 1x up to 512x
• Base frequency 200 Khz and up to 2 Mhz at 16x interpolation and above
• Infrared (IR) light source:
  • More robust to contamination
• Surface-mount leadless package (W x L x H):
  • 4.0 × 4.0 × 1.05 mm
• Operating temperature range:
  • From -40 to 115 °C (extended industrial)
• Optional automotive part AEDR-9920A:
  • AEC-Q100-compliant
  • Automotive Grade 1: from -40 to 125 °C

more information: https://www.broadcom.com/products/motion-control-encoders/incremental-encoders/reflective-encoders/aedr-9920

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