NFC / HF RFID Reader IC

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  • The ST25R3912/3 are highly integrated NFC Initiators / HF Reader ICs, 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 ST25R3912/3 are 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 (ST25R3913 only), the device is optimized for applications with directly driven antennas. The ST25R3912/3 are alone in the domain of HF reader ICs as they contain two differential low impedance (1 Ohm) antenna drivers.
    The ST25R3912/3 include several features that make them very suited for low power applications. The presence of a card can be detected by performing a measurement of amplitude or phase of signal on antenna LC tank, and comparing it to the stored reference. They also contain 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 (phase or amplitude).
    The ST25R3912/3 are 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.

    Key Features

    • ISO 18092 (NFCIP-1) Active P2P
    • ISO14443A, ISO14443B, ISO15693 and FeliCa™
    • Support HBR up to 848 kbit/s PICC to PCD and PCD to PICC framing
    • Inductive sensing - Wake-up
    • Automatic antenna tuning system providing tuning of antenna LC tank (ST25R3913 only)
    • Automatic modulation index adjustment
    • AM and PM (I/Q) demodulator channels with automatic selection
    • Up to 1 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
    • ST25R3912: VFQFPN32, 5 mm x 5 mm package with wettable flanks
    • ST25R3913: QFN32, 5 mm x 5 mm package
    • WLCSP, 3.0 mm x 2.8 mm package (ST25R3912 only)

样片和购买

产品型号
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包装类型
供货状态
预算价格(US$)
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从分销商订购
从ST订购
ST25R3912-AQWT VFQFPN 5X5X1 32L WETTABLE FLANKS Tape And Reel
批量生产
2.4 1000 EAR99 - 没有经销商,请联系我们的销售办事处
ST25R3912-AWLT WLCSP Tape And Reel
批量生产
2.4 1000 EAR99 - 查看供货情况

Distributor availability ofST25R3912-AWLT

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3270 1 Order Now
ARROW AMERICA 28000 4000 Order Now
MOUSER WORLDWIDE 2825 1 Order Now

代理商库存报告日期: 2019-11-14

代理商名称

DIGIKEY

库存

3270

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

28000

Min.Order

4000

地区

AMERICA Order Now

MOUSER

库存

2825

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-14

立即购买

ST25R3912-AQWT

封装

VFQFPN 5X5X1 32L WETTABLE FLANKS

包装类型

Tape And Reel

单价(US$)

2.4*

供货状态

批量生产

单价(US$)

2.4

数量

1000

ECCN (US)

EAR99

Country of Origin

-

ST25R3912-AWLT

封装

WLCSP

包装类型

Tape And Reel

单价(US$)

2.4*

Distributor availability ofST25R3912-AWLT

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3270 1 Order Now
ARROW AMERICA 28000 4000 Order Now
MOUSER WORLDWIDE 2825 1 Order Now

代理商库存报告日期: 2019-11-14

代理商名称

DIGIKEY

库存

3270

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

28000

Min.Order

4000

地区

AMERICA Order Now

MOUSER

库存

2825

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-14

供货状态

批量生产

单价(US$)

2.4

数量

1000

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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软件

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评估工具

    • 产品型号

      Discovery kit for ST25R3911B high performance HF reader / NFC initiator with 1.4 W output power, VHBR and AAT

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技术文档

    • 描述 版本 文档大小 操作
      DS11794
      High performance HF reader / NFC initiator for payment applications with 1 W output power
      6.0
      2.01 MB
      PDF
      DS11794

      High performance HF reader / NFC initiator for payment applications with 1 W output power

    • 描述 版本 文档大小 操作
      AN4974
      Antenna matching for ST25R3911B/ST25R391x devices
      2.0
      3 MB
      PDF
      AN5043
      Layout recommendations for the design of boards with ST25R3911B/ST25R391x devices
      4.0
      873.78 KB
      PDF
      AN4985
      Wake-up mode of the ST25R3911B/ST25R391x
      1.0
      805.57 KB
      PDF
      AN4974

      Antenna matching for ST25R3911B/ST25R391x devices

      AN5043

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

      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
      AN5322
      ST25R3916 automatic antenna tuning (AAT)
      1.0
      1.08 MB
      PDF
      AN5276

      Antenna design for ST25R3916

      AN4974

      Antenna matching for ST25R3911B/ST25R391x devices

      AN5322

      ST25R3916 automatic antenna tuning (AAT)

演示和培训资料

    • 描述 版本 文档大小 操作
      ST253911B-15 Product Presentation 1.0
      3.4 MB
      PDF

      ST253911B-15 Product Presentation

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      High performance NFC/RFID readers 1.0
      975.29 KB
      PDF

      High performance NFC/RFID readers

    • 描述 版本 文档大小 操作
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
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      NFC solutions from ST 1.0
      5.1 MB
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      Electric vehicle (EV) ecosystem

      NFC solutions from ST

产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
ST25R3912-AQWT
批量生产
VFQFPN 5X5X1 32L WETTABLE FLANKS 工业 Ecopack2
ST25R3912-AWLT
批量生产
WLCSP 工业 N/A

ST25R3912-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

ST25R3912-AWLT

Package:

WLCSP

Material Declaration**:

Marketing Status

批量生产

Package

WLCSP

Grade

Industrial

RoHS Compliance Grade

N/A

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.