TIDA-00179, Universal Digital Interface to Absolute Position Encoders Reference Design

Description

• TIDA-00179, Reference Design is an EMC compliant universal digital interface to connect to absolute position encoders, like EnDat 2.2, BiSS, SSI or HIPERFACE DSL. The design supports a wide input voltage range from 15-60V (24V nom). A connector with 3.3V logic I/O signals allows for direct interface to the host processor to run the master protocol. The design allows the host processor to select between a 4-wire encoder interface like EnDat 2.2 and BiSS or a 2-wire interface with power over RS485 like HIPERFACE DSL. To meet the selected encoder's supply range, the design offers a programmable output voltage with either 5.25V or 11V. This design's power supply offers protection against over-voltage and short circuit according to the selected encoder's voltage range to prevent damage during a cable short. TIDA-00179 has been tested up to 100m cable length with EnDat 2.2 and 2-wire HIPERFACE DSL encoders