Why ST’s NFC readers are the right fit for challenging environments

Discover the ST25R’s benefits with battery saving and automatic antenna tuning features

Obtain optimal RF performance and flexibility combined with low power consumption using the ST25R reader series, positioned perfectly for the infrastructure side of the NFC system, thanks to automatic antenna tuning (AAT) technology for applications with directly driven antennas.

Meet our application engineers and learn how our NFC readers are the right fit for challenging environments. 

Join us July 12th at 12 noon CDT

Participate in a 1-hour webinar on the ST25R HF reader series

You will learn:

  • How to save power by implementing general, inductive, and capacitive wake-up functions
  • How to implement automatic antenna tuning (AAT)
  • How to use its high output power capabilities

Application engineers will be available to answer your questions directly online. 

There is no charge to participate in this event, but you must register through my.st.com.
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Webinar agenda

12:00 pm – 12:45 pm (CDT)

  • Overview of today’s challenging environments for NFC readers
  • ST25R product family overview
  • Unique features of ST25R HF readers:  
    • Use of wake-up modes
    • Automatic antenna tuning
    • High-power mode
  • Introduction to the ST25 development ecosystem

12:45 pm – 1:00 pm

  • Q&A


ST25 NFC / RFID tags & readers  

ST offers one of the most comprehensive NFC / RFID portfolios.  The ST25 product family is based on the 13.56 MHz carrier frequency and supports ISO/IEC 14443 and ISO/IEC 15693 standards.

The ST25R reader series includes several features that make it very suitable for low-power applications. It contains a low-power capacitive sensor that can be used to detect the presence of a tag without switching on the reader’s RF field. Tag presence can also be detected by measuring the signal’s amplitude or phase using an antenna LC tank, and comparing it to the stored reference. It also contains a low-power RC oscillator and wake-up timer that can be used to wake up the system after a defined time period, and to check for the presence of a tag using one or more low-power detection techniques (capacitive, phase or amplitude).

The ST25R reader series is designed to operate from a wide (2.4 to 5.5 V) power supply range, with peripheral interface IO pins supporting a power supply range from 1.65 to 5.5 V. Offering two differential low-impedance (1 Ohm) antenna drivers, the ST25R series is perfect for all NFC reader solutions.