MAX14827 IO-Link Device Transceiver

The Industry 4.0 revolution is enabling smarter factories to increase productivity and manufacturing flexibility. Analog Devices' IO-link sensors enable this revolution by bringing intelligence and control down to the factory floor. Sensors are getting smaller and need to deliver more functionality while ensuring robust communications. Power is also critical because these sensors are small and it is difficult to dissipate heat. The MAX14827 dual-channel, 250 mA transceiver meets these requirements, while also integrating high-voltage functions commonly found in industrial sensors, including drivers and regulators. It features two ultra-low-power drivers with active reverse-polarity protection to reduce downtime.

For sensors that use a microcontroller, a serial peripheral interface (SPI) is available with extensive diagnostics. For IO-link operation, a three-wire UART interface is provided, allowing interfacing to the microcontroller UART. Finally, a multiplexed UART/SPI option allows using one serial microcontroller interface for shared SPI and UART interfaces. The device includes onboard 3.3 V and 5 V linear regulators for low-noise analog/logic supply rails.

The MAX14827 integrates the high-voltage functions commonly found in industrial sensors, including drivers and regulators. The MAX14827 features two ultra-low-power drivers with active reverse-polarity protection. Operation is specified for normal 24 V supply voltages up to 60 V. Transient protection is simplified due to high-voltage tolerance allowing the use of micro TVS.