ST25R3911B

ST25R3911B Datasheet High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT QFN32/VFQFPN32 (5 × 5 mm) Wafer Product status link ST25R3911B 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 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...