概述
样片和购买
解决方案
资源
工具与软件
质量与可靠性
eDesignSuite
开始
Partner products
Sales Briefcase
  • 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) 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.

    主要特性

    • ISO 18092 (NFCIP-1) Active P2P
    • ISO14443A, ISO14443B 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
    • QFN32, 5 mm x 5 mm package

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生态系统

    • 产品型号

      用于STM32和STM8 Nucleo的基于ST25R3911B的NFC读卡器扩展板

软件

评估工具

    • 产品型号

      ST25R3911B高性能HF读写器/NFC发起设备探索套件,支持1.4 W输出功率、VHBR和AAT

      ST25R3911B高性能HF读写器的EMVCo参考设计

00 选择要下载的文档

技术文档

    • 描述 版本 文档大小 操作
      DS11793
      1.4 W功耗可支持VHBR和AAT的高性能HF读卡器 / NFC发起设备
      1.0
      2.39 MB
      PDF
      DS11793

      1.4 W功耗可支持VHBR和AAT的高性能HF读卡器 / NFC发起设备

    • 描述 版本 文档大小 操作
      AN4974
      Antenna matching for ST25R3911B/ST25R391x devices
      2.0
      3 MB
      PDF
      AN4914
      Automatic Antenna Tuning (AAT) of ST25R3911B/ST25R391x devices
      2.0
      1.9 MB
      PDF
      AN5043
      Layout recommendations for the design of boards with ST25R3911B/ST25R391x devices
      4.0
      873.78 KB
      PDF
      AN5309
      ST25R3911B to ST25R3916 migration guide
      1.0
      217.33 KB
      PDF
      AN4985
      Wake-up mode of the ST25R3911B/ST25R391x
      1.0
      805.57 KB
      PDF
      AN4974

      Antenna matching for ST25R3911B/ST25R391x devices

      AN4914

      Automatic Antenna Tuning (AAT) of ST25R3911B/ST25R391x devices

      AN5043

      Layout recommendations for the design of boards with ST25R3911B/ST25R391x devices

      AN5309

      ST25R3911B to ST25R3916 migration guide

      AN4985

      Wake-up mode of the ST25R3911B/ST25R391x

    • 描述 版本 文档大小 操作
      AN5276
      Antenna design for ST25R3916
      2.0
      2.75 MB
      PDF
      AN4974
      Antenna matching for ST25R3911B/ST25R391x devices
      2.0
      3 MB
      PDF
      AN4914
      Automatic Antenna Tuning (AAT) of ST25R3911B/ST25R391x devices
      2.0
      1.9 MB
      PDF
      AN5322
      ST25R3916 automatic antenna tuning (AAT)
      2.0
      1.06 MB
      PDF
      AN5276

      Antenna design for ST25R3916

      AN4974

      Antenna matching for ST25R3911B/ST25R391x devices

      AN4914

      Automatic Antenna Tuning (AAT) of ST25R3911B/ST25R391x devices

      AN5322

      ST25R3916 automatic antenna tuning (AAT)

Presentations & Training Material

    • 描述 版本 文档大小 操作
      ST253911B-12 product presentation 1.0
      2.04 MB
      PDF

      ST253911B-12 product presentation

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      ST25R系列高性能NFC/RFID读卡器 1.0
      975.29 KB
      PDF

      ST25R系列高性能NFC/RFID读卡器

    • 描述 版本 文档大小 操作
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      NFC solutions from ST 1.1
      14.89 MB
      PDF

      Electric vehicle (EV) ecosystem

      NFC solutions from ST

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
ST25R3911B-AQFT
批量生产
VFQFPN 5X5 32L PAD 3.5X3 PUNCHED 工业 Ecopack2
ST25R3911B-AQWT
批量生产
VFQFPN 5X5X1 32L WETTABLE FLANKS 工业 Ecopack2
ST25R3911B-ASWB
批量生产
US WF V.I. 工业 N/A

ST25R3911B-AQFT

Package:

VFQFPN 5X5 32L PAD 3.5X3 PUNCHED

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 5X5 32L PAD 3.5X3 PUNCHED

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST25R3911B-AQWT

Package:

VFQFPN 5X5X1 32L WETTABLE FLANKS

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 5X5X1 32L WETTABLE FLANKS

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST25R3911B-ASWB

Package:

US WF V.I.

Material Declaration**:

Marketing Status

批量生产

Package

US WF V.I.

Grade

Industrial

RoHS Compliance Grade

N/A

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

Step 1: Purchase Discovery kit, Nucleo board or Evaluation board

X-NUCLEO-NFC05A1

用于STM32和STM8 Nucleo的基于ST25R3911B的NFC读卡器扩展板

ST25R3911B-DISCO

ST25R3911B高性能HF读写器/NFC发起设备探索套件,支持1.4 W输出功率、VHBR和AAT

ST25R3911B-EMVCO

ST25R3911B高性能HF读写器的EMVCo参考设计

Step 2: Download associated software

X-CUBE-NFC5

STM32Cube的高性能HF读写器/NFC发起设备IC软件扩展

STSW-ST25PC001

ISO15693、ISO14443-A/B、NFC和工业读写器的Windows® PC软件

STSW-ST25R001

ST25R3911B-DISCO的PC软件安装程序

STSW-ST25R002

ST25R3911B-DISCO的基于STM32L4的固件源代码

STSW-ST25R004

ST25R NFC/HF读写器系列的天线匹配工具

STSW-ST25R009

使用X-NUCLEO-NFC05A1的Raspberry Pi ST25R3911B Linux演示

Step 3: Get trained

ST253911B-12 product presentation

ST253911B-12 product presentation

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
ST25R3911B-AQFT Available at 7 distributors

...的经销商可用性ST25R3911B-AQFT

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 4594 1 马上订购
RS COMPONENTS EUROPE 3448 1 马上订购
AVNET AMERICA 4000 0 马上订购
FUTURE WORLDWIDE 8000 4000 马上订购
ARROW EUROPE 19247 0 马上订购
ARROW AMERICA 4000 3000 马上订购
MOUSER WORLDWIDE 6238 1 马上订购

代理商库存报告日期: 2020-08-03

代理商名称

DIGIKEY

库存

4594

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

3448

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

4000

Min.Order

0

地区

AMERICA 马上订购

FUTURE

库存

8000

Min.Order

4000

地区

WORLDWIDE 马上订购

ARROW

库存

19247

Min.Order

0

地区

EUROPE 马上订购

ARROW

库存

4000

Min.Order

3000

地区

AMERICA 马上订购

MOUSER

库存

6238

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-08-03

样片和购买 立即购买
批量生产
EAR99 NEC Tape And Reel VFQFPN 5X5 32L PAD 3.5X3 PUNCHED -40 125 SOUTH KOREA 2.8 / 1k
ST25R3911B-AQWT 没有经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tape And Reel VFQFPN 5X5X1 32L WETTABLE FLANKS -40 125 THAILAND 2.8 / 1k
ST25R3911B-ASWB 没有经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Not Applicable US WF V.I. -40 125 CHINA 2.8 / 1k

ST25R3911B-AQFT

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.8 / 1k

...的经销商可用性ST25R3911B-AQFT

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 4594 1 马上订购
RS COMPONENTS EUROPE 3448 1 马上订购
AVNET AMERICA 4000 0 马上订购
FUTURE WORLDWIDE 8000 4000 马上订购
ARROW EUROPE 19247 0 马上订购
ARROW AMERICA 4000 3000 马上订购
MOUSER WORLDWIDE 6238 1 马上订购

代理商库存报告日期: 2020-08-03

代理商名称

DIGIKEY

库存

4594

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

3448

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

4000

Min.Order

0

地区

AMERICA 马上订购

FUTURE

库存

8000

Min.Order

4000

地区

WORLDWIDE 马上订购

ARROW

库存

19247

Min.Order

0

地区

EUROPE 马上订购

ARROW

库存

4000

Min.Order

3000

地区

AMERICA 马上订购

MOUSER

库存

6238

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-08-03

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

VFQFPN 5X5 32L PAD 3.5X3 PUNCHED

Operating Temperature (°C)

(最小值)

-40

(最大值)

125

Budgetary Price (US$)* / Qty

2.8 / 1k

Country of Origin

SOUTH KOREA

ST25R3911B-AQWT

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.8 / 1k

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

VFQFPN 5X5X1 32L WETTABLE FLANKS

Operating Temperature (°C)

(最小值)

-40

(最大值)

125

Budgetary Price (US$)* / Qty

2.8 / 1k

Country of Origin

THAILAND

ST25R3911B-ASWB

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.8 / 1k

ECCN (EU)

NEC

包装类型

Not Applicable

封装

US WF V.I.

Operating Temperature (°C)

(最小值)

-40

(最大值)

125

Budgetary Price (US$)* / Qty

2.8 / 1k

Country of Origin

CHINA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商