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

Pumps Push the Boundaries of Low Temperature Technology

June 14, 2024
As an integral part of cryotechnology, KNF pumps facilitate scientific advances in cryostats, allowing them to push temperature boundaries and approach absolute zero.

The entire spectrum of drive technology

June 5, 2024
Read exciting stories about all aspects of maxon drive technology in our magazine.

MONITORING RELAYS — TYPES AND APPLICATIONS

May 15, 2024
Production equipment is expensive and needs to be protected against input abnormalities such as voltage, current, frequency, and phase to stay online and in operation for the ...

Solenoid Valve Mechanics: Understanding Force Balance Equations

May 13, 2024
When evaluating a solenoid valve for a particular application, it is important to ensure that the valve can both remain in state and transition between its de-energized and fully...

Voice your opinion!

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