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New Product Introduction

NPI Body

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