AEDT-981x Encoder Modules

By Broadcom Limited 242

AEDT-981x Encoder Modules

Broadcom's AEDT-981x is a series of high resolution 3-channel optical incremental encoder modules designed for robust, high precision motion control applications. Building upon Broadcom's market-proven HEDS-914x series, the AEDT-981x features a built-in interpolator supporting a wide range of encoding resolution from 1,000 counts to 5,000 counts per revolution (CPR) using a code wheel of 11 mm optical radius. The module series is industrial grade with operating temperature from -40°C to +115°C.

With built-in LED brightness autoregulation, the AEDT-981x maintains an optimal encoder performance across spatial corners with low current consumption. The AEDT-981x offers a wide spatial error tolerance of 0.4 mm and code wheel gap range of ±0.15 mm, providing ease of motor shaft alignment and enhancing photo detector signal integrity.

Features
  • Operating temperature: -40°C to +115°C
  • Dual channel quadrature outputs with index pulse output
  • Single-ended output with ±5 mA output sink/source current per channel
  • ESD immunity HBM 4 kV (JESD22-A114D)
  • Small form factor: 26.67 mm (L) x 20.8 mm (W) x 10.16 mm (H)
  • Encoding resolution: 1,000 CPR, 1,024 CPR, 1,250 CPR, 2,000 CPR, 2,048 CPR, 2,500 CPR, 4,000 CPR, 4,096 CPR, and 5,000 CPR
  • Low power consumption (typical 20 mA ICC)
  • No signal adjustment required
  • Pin compatible to legacy HEDS-9xxx series
  • Spatial play tolerance of Ø 0.40 mm
  • Code wheel gap range of ±0.15 mm
Applications
  • Commercial and industrial motion control applications
    • DC servo motors
    • Linear and rotary actuators
    • Factory automation equipment
  • 3D printers
  • Robotics
  • Unmanned aerial vehicles (UAV) or drones

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