ST25R3911B-AQFT

ST25R3911B-AQFT

ST25R3911B-AQWT

ST25R3911B-AQWT

Active

ST25R3911B-ASWB

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

Supply Voltage Min Volt2.4
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
RoHs compliantN/A
GradeIndustrial
Package NameUS WF V.I.

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...
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Key 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
Out of Stock
Quantity $ per unit Savings
1-9$4.480%
10-99$4.275%
100-500$4.0410%
Contact sales
$4.48
Supply Voltage Min Volt2.4
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
RoHs compliantN/A
GradeIndustrial
Package NameUS WF V.I.

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...
Read More

Key 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