STMicroelectronics ST25R3911B-AQFT

Enrgtech Part No: ET12124416
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Manufacturer Part No:
ST25R3911B-AQFT
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Manufacturer: STMicroelectronics

Product Information

Automotive Standard:

Operating Band 1 Frequency:

27.12MHz

Minimum Supply Voltage:

2.4V

Maximum Supply Voltage:

5.5V

Series:

ST25R3911B

Sub Type:

Transceiver

Height:

0.95mm

Modulation Technique:

Width:

5 mm

Length:

5mm

Package Type:

QFN

Interface Type:

SPI

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The STMicroelectronics ST25R3911B-AQFT is a highly integrated, high-performance NFC initiator and HF reader IC tailored for sophisticated wireless infrastructure. It stands out in the market by offering up to 1.4W of output power and integrated Automatic Antenna Tuning (AAT) to simplify complex RF designs. This chip supports a wide array of protocols, including ISO 18092 and ISO 14443A/B, making it perfect for secure access control, payment systems, and industrial monitoring.

Reasons You Should Use the Product

This STMicroelectronics ST25R3911B-AQFT chip delivers industry-leading RF performance and low-power sensing, extending the operational life of battery-powered devices. The integrated antenna tuning ensures reliable communication even in challenging metal-heavy or shifting environments.

High 1.4W output power for extended reading range.
Automatic Antenna Tuning (AAT) for optimised RF performance.
Capacitive wake-up feature for ultra-low power consumption.

Core Performance Features & Key Uses

The IC is designed for the infrastructure side of NFC systems, enabling simultaneous operation of two antennas in single-ended mode. It is widely utilised in ticketing systems, electronic locking, and gaming peripherals.

Technical Specifications
Operating Frequency: 13.56 MHz
Supply Voltage: 2.4V to 5.5V
Interface: 6 Mbit/s SPI with 96-byte FIFO
Output Power: Up to 1.4 W
Package: 32-VFQFN (5x5 mm)
Suitable Environments
Industrial access control and security checkpoints.
Outdoor payment kiosks and ticketing terminals.
Harsh temperature conditions ranging from -40°C to 125°C.

ST25R3911B-AQFT Datasheet(Technical Reference)

ST25R3911B-AQFT 06/Feb/2023(PCN Assembly/Origin)

ST25R3911B-AQFT Material Chgs 18/Jun/20(PCN Design/Specification)

ST25R3911B-AQFT Material Chgs 8/Apr/2021(PCN Design/Specification)

AMS Buyout/ MPN Updates 1/Jan/2017(PCN Other)

ST25R3911B Datasheet(Datasheets)

ST25R Series Flyer(Datasheets)

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FAQs

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You can order STMicroelectronics brand products with ST25R3911B-AQFT directly through our website or call us at +44 (0) 3303 800 157 or email our support team at sales@enrgtech.co.uk.

Yes. Our products in RFID, RF Access, Monitoring ICs category are shipped in lowest possible time.

You will get a confirmation email regarding your order of STMicroelectronics ST25R3911B-AQFT. You can also check on our website or by contacting our customer support team for further order details on STMicroelectronics ST25R3911B-AQFT.