High-temperature C-shaped encoder module

Avago Technologies has added a new compact high-temperature six-channel optical incremental C-shaped encoder module for brushless DC motors used in industrial and factory automation equipment. The company’s miniature AEDT-9340 encoder module is designed to enable the reduction in overall motor sizes and fits easily in round encoder housings.

The module includes a lensed LED source and a detector IC enclosed in a small plastic package to offer better switching accuracy (+/–1º mechanical commutation) than conventional Hall sensors. When used with a codewheel, it detects rotary position. Moreover, due to a highly collimated light source and a unique photo-detector array, this module is extremely tolerant to mounting misalignment. Typical industrial automation applications include robotic devices, textile machines, machine tools and food and packaging machines.

It has integrated commutation output channels (U, V, W), two channel quadrature outputs (A, B) and a third channel index output (I).  This ungated index output is a positive index pulse that is generated once for each rotation of the codewheel.
http://www.avagotech.com/motioncontrol