High EMC immunity RS485 interface reference design for absolute encoders

This high EMC immunity reference design from Texas Instruments demonstrates an RS485 transceiver to use on both the drive and inside encoders such as EnDat 2.2, BiSS, Tamagawa, etc. EMC immunity, particularly immunity against inverter switching noise, is important for position encoder feedback systems within industrial drives. This design introduces a platform called Intelligent Industrial Internet (I3) Mote. The I3Mote is designed as an open and universal hardware platform targeting process/factory automation and building automation connectivity and sensing deployments. By using the most advanced low-power components to address wireless and wired connectivity, onboard computing, and sensing, the platform is designed for early prototyping and easy deployment with a small form factor and robust performance.