ST25R3911B-AQFT

STMicroelectronics
ST25R3911B Datasheet High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT Features • • • QFN32 Wafer • • • • • • • • • • • • • • Product status link ST25R3911B ISO 18092 (NFCIP-1) Active P2P ISO14443A, ISO14443B, ISO15693 and FeliCa™ Supports VHBR (3.4 Mbit/s PICC to PCD framing, 6.8 Mbit/s AFE and PCD to PICC framing) Capacitive sensing - Wake-up Automatic anten...
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Внешний вид серии ST25R3911

Технические характеристики

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Конструктивное исполнение
Корпус VFQFPN32
Рабочая частота
Режим работы
Стандарт передачи данных
Версия стандарта протокола ISO 18092 (NFCIP-1) Active P2P; ISO14443A, ISO14443B, ISO15693 and FeliCa™
Поддерживаемые интерфейсы
Напряжение питания
Мощность передатчика
Размер 5×5 мм
Рабочая температура
Примечания ISO 18092 (NFCIP-1) Active P2P; ISO14443A, ISO14443B, ISO15693 and FeliCa™
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Файлы 2

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ST25R3911B Datasheet High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT Features • • • QFN32 Wafer • • • • • • • • • • • • • • Product status link ST25R3911B ISO 18092 (NFCIP-1) Active P2P ISO14443A, ISO14443B, ISO15693 and FeliCa™ Supports VHBR (3.4 Mbit/s PICC to PCD framing, 6.8 Mbit/s AFE and PCD to PICC framing) Capacitive sensing - Wake-up Automatic antenna tuning system providing tuning of antenna LC tank Automatic modulation index adjustment AM and PM demodulator channels with automatic selection DPO (Dynamic power output) Up to 1.4 W in case of differential output User selectable and automatic gain control Transparent and stream modes to implement MIFARE™ classic compliant or other custom protocols Possibility of driving two antennas in single ended mode Oscillator input capable of operating with 13.56 MHz or 27.12 MHz crystal with fast start-up 6 Mbit/s SPI with 96 bytes FIFO Wide supply voltage range from 2.4 V to 5.5 V Wide temperature range: -40 °C to 125 °C QFN32, 5x5 mm package with wetable flank or wafer delivery Description The ST25R3911B is a highly integrated NFC Initiator / HF Reader IC, including the analog front end (AFE) and a highly integrated data framing system for ISO 18092 (NFCIP-1) initiator, ISO 18092 (NFCIP-1) active target, ISO 14443A and B reader (including high bit rates), ISO 15693 reader and FeliCa™ reader. Implementation of other standard and custom protocols like MIFARE™ Classic is possible using the AFE and implementing framing in the external microcontroller (Stream and Transparent modes). The ST25R3911B is positioned perfectly for the infrastructure side of the NFC system, where users need optimal RF performance and flexibility combined with low power. Thanks to automatic antenna tuning (AAT) technology, the device is optimized for applications with directly driven antennas. The ST25R3911B is alone in the domain of HF reader ICs as it contains two differential low impedance (1 Ohm) antenna drivers. The ST25R3911B includes several features that make it very suited for low power applications. It contains a low power capacitive sensor that can be used to detect the presence of a card without switching on the reader field. The presence of a card can also be detected by performing a measurement of amplitude or phase of signal on 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 ST25R3911B is designed to operate from a wide (2.4 V to 5.5 V) power supply range; peripheral interface IO pins support power supply range from 1.65 V to 5.5 V. DS11793 - Rev 6 - April 2020 For further information contact your local STMicroelectronics sales office. www.st.com PDF
Документация на ST25R3911B-AQFT 

Datasheet - ST25R3911B - High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT The ST25R3911B is a highly integrated NFC Initiator / HF Reader IC, including the analog front end (AFE) and a highly integrated data ...

Дата модификации: 16.04.2020

Размер: 1.6 Мб

116 стр.

ST25R3911B High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT Datasheet - production data Description QFN32 The ST25R3911B is a highly integrated NFC Initiator / HF Reader IC, including the analog front end (AFE) and a highly integrated data framing system for ISO 18092 (NFCIP-1) initiator, ISO 18092 (NFCIP-1) active target, ISO 14443A and B reader (including high bit rates), ISO 15693 reader and FeliCa™ reader. Implementation of other standard and custom protocols like MIFARE™ Classic is possible using the AFE and implementing framing in the external microcontroller (Stream and Transparent modes). Wafer Features • ISO 18092 (NFCIP-1) Active P2P • ISO14443A, ISO14443B, ISO15693 and FeliCa™ • Supports VHBR (3.4 Mbit/s PICC to PCD framing, 6.8 Mbit/s AFE and PCD to PICC framing) • Capacitive sensing - Wake-up • Automatic antenna tuning system providing tuning of antenna LC tank • Automatic modulation index adjustment • AM and PM (I/Q) demodulator channels with automatic selection • DPO (Dynamic Power Output) • Up to 1.4 W in case of differential output • User selectable and automatic gain control • Transparent and Stream modes to implement MIFARE™ Classic compliant or other custom protocols • Possibility of driving two antennas in single ended mode • Oscillator input capable of operating with 13.56 MHz or 27.12 MHz crystal with fast start-up • 6 Mbit/s SPI with 96 bytes FIFO • Wide supply voltage range from 2.4 V to 5.5 V • Wide temperature range: -40 °C to 125 °C The ST25R3911B is positioned perfectly for the infrastructure side of the NFC system, where users need optimal RF performance and flexibility combined with low power. Thanks to automatic antenna tuning (AAT) technology, the device is optimized for applications with directly driven antennas. The ST25R3911B is alone in the domain of HF reader ICs as it contains two differential low impedance (1 Ohm) antenna drivers. The ST25R3911B includes several features that make it very suited for low power applications. It contains a low power capacitive sensor that can be used to detect the presence of a card without switching on the reader field. The presence of a card can also be detected by performing a measurement of amplitude or phase of signal on 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 ST25R3911B is designed to operate from a wide (2.4 V to 5.5 V) power supply range; peripheral interface IO pins support power supply range from 1.65 V to 5.5 V. • QFN32, 5 mm x 5 mm package February 2018 This is information on a product in full production. DS11793 Rev 4 1/131 www.st.com PDF
Документация на ST25R3911B-AQFT 

High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT

Дата модификации: 26.02.2018

Размер: 2.04 Мб

131 стр.

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