Ultra-Small IO-Link Sensor Transmitter with RTD Front End Reference Design
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Key Document


This reference design demonstrates the IO-Link communication in a small form factor of just 6mm PCB width with integrated protection and a resistance temperature detector (RTD) sensor front-end. The highly integrated and tiny IO-Link PHY offers: ESD, EFT, surge protection and reverse polarity protection. The build in LDO and configurable output current provide easy and flexible system implementation and offer at the same time low power dissipation due to the ultra-low residual voltage. The 24 bit Sigma-Delta analog to digital converter (ADC) captures the RTD value (PT100 temperature sensor), which is converted in the MCU and sent via IO-Link to the IO-Link master

  • IO-Link PHY with integrated
    • 3.3V or 5.0V LDO
    • Reverse polarity protection
    • ESD, EFT and surge protection according to IEC 61000-4
  • 50-mA to 350-mA configurable output current limit
  • IO-link v1.1 and v1.10 (TMG stack)
  • Small PCB board width of only 6mm

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS1220  24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & SPI interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR5738  24 MHz MCU with 16KB FRAM, 1KB SRAM, 10-bit ADC , comparator, UART/SPI/I2C, timer  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TIOL111  IO-Link device transceiver with integrated surge protection  Interface  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS1220 Download Download
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MSP430FR5738 Download
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TIOL111 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1130 29 Aug 2017
Design files (6)
Title Type Size (KB) Date
ZIP 388 29 Aug 2017
ZIP 652 29 Aug 2017
PDF 507 29 Aug 2017
PDF 94 29 Aug 2017
PDF 49 29 Aug 2017
PDF 496 29 Aug 2017
Related Tools & Software

Reference Designs (3)

Name Part Number Tool Type
IO-Link Firmware Update Reference Design Leveraging MSP430 FRAM Technology  TIDA-00461  Reference design 
IO-Link Sensor Transmitter Reference Design  TIDA-00188  Reference design 
Smart Solenoid Driver with Predictive Maintenance Reference Design  TIDA-01250  Reference design 

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