IO-Link Distance Sensor
The MAXREFDES174# is a complete, high-accuracy, IO-Link® distance sensor reference design that provides accurate measurements for distances up to 4m. Built in an industrial form factor, the reference design makes use of a commercially available time-of-flight (ToF) laser-ranging sensor.
In this design, a Renesas RL78 (R5F10E8EALA) microcontroller interfaces between the distance sensor and the MAX22513 IO-Link device transceiver. The MAX22513 features an internal high-efficiency DC-DC buck regulator, two internal LDOs, and integrated surge protection for robust communications in a very small PCB area without requiring external protection components, such as TVS diodes. The MAX22513 is in a 28-pin TQFN package, allowing the MAXREFDES174# to have a tiny footprint of just 1.2in (3cm) in length. The design is reverse-polarity protected using the integrated active reverse-polarity protection of the MAX22513. The internal DC-DC buck regulator significantly reduces power dissipation, and the two integrated LDO regulators in the MAX22513 generate 3.3V and 5V, which reduces the number of required external components and saves space. The MAX22513 also features low on-resistance drivers (C/Q and DO/DI) to further reduce power dissipation, allowing this reference design to consume minimal power with very low thermal dissipation.
This sensor utilizes the IQ2 Development® IO-Link device stack to communicate to any IO-Link version 1.1-compliant master.
- IEC 61131-9 Compliant
- IQ2 Development IO-Link Stack
- IO-Link Version 1.1 Compliant
- Measures Distances Up to 4m
User Manual and source code is available on request.