Scanning for Ideas: Smallest three-channel reflective encoder

May 4, 2011
The market’s smallest three-channel reflective encoder, the new line of AEDR-850× encoders from Avago, San Jose, feature an LED light source, photodetecting and interpolator circuitry, and three channels in a 3.95 × 3.40-mm leadless package

Edited by Stephen J. Mraz

The market’s smallest three-channel reflective encoder, the new line of AEDR-850× encoders from Avago, San Jose, feature an LED light source, photodetecting and interpolator circuitry, and three channels in a 3.95 × 3.40-mm leadless package. The 1×, 2×, and 4× interpolation circuitry, together with encoding resolutions of 304 lines/in. (12 lines/mm), gives users design flexibility. The optical- based encoders are significantly less susceptible to EMI compared with Hall-effect devices.

The chips operate from a single 5-V power supply and can handle temperatures from –20 to 85°C. The encoders are also TTL compatible, letting outputs interface directly with most signal-processing circuitries.

The AEDR-8500 reflective encoder is gated 90°, the AEDR-8501 encoder is gated 180°, and the AEDR-8502 encoder is ungated 360°. They are priced at $6.75 each in 100-piece lots.

© 2011 Penton Media, Inc.

Sponsored Recommendations

Sept. 16, 2025
From robotic arms to high-speed conveyors, accuracy matters. Discover how encoders transform motor control by turning motion into real-time datadelivering tighter speed control...
Sept. 16, 2025
Keep high-torque gearboxes running efficiently with external lubrication and cooling systems delivered fast. Flexible configurations, sensor-ready monitoring, and stocked options...
Sept. 16, 2025
Now assembled in the U.S., compact P2.e planetary gear units combine maximum torque, thermal efficiency, and flexible configurations for heavy-duty applicationsavailable faster...
Sept. 16, 2025
Safety in automation goes beyond fences and emergency stops. Learn how functional safety actively monitors and controls motiondelivering smarter protection, greater flexibility...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!