ST25R3911B

批量生产
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NFC / HF RFID读写器IC

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产品概述

描述

ST25R3911B是高度集成的NFC发起设备 / HF读写器IC，包括模拟前端（analog front end，AFE）和一个高度集成的数据成帧系统，可用于ISO 18092（NFCIP-1）发起设备、ISO 18092（NFCIP-1）主动目标设备、ISO 14443A和B读写器（包括高比特率）、ISO 15693读写器以及FeliCa™读写器。其他标准和自定义协议（如MIFARE™ Classic）可使用AFE实现，并可在外部微控制器（Stream和Transparent模式）中实现数据打包。

ST25R3911B完全适用于NFC系统的基础结构侧，在这些系统中用户需要最佳RF性能和灵活性以及低功耗能力。

由于采用了自动天线调谐（AAT）技术，该器件对于具有直接驱动天线的应用是最优的。ST25R3911B在HF读写器IC领域是独一无二的，因为它具有两个差分低阻抗（1 Ohm）天线驱动器。

ST25R3911B包含多种功能，使其非常适合于低功耗应用。它包含一个低功耗电容传感器，可用来检测卡片是否存在，而无需开启读写器场。也可通过对天线LC谐振腔上的信号进行幅度或相位测量，并将其与存储参考值进行比较，来检测卡片是否存在。它还包含了一个低功耗RC振荡器和唤醒定时器，可用来在定义时间周期后唤醒系统，以及使用一种或多种低功耗检测技术（电容，相位或幅度）来检查标签是否存在。

ST25R3911B经过设计，可在宽范的（2.4 V至5.5 V）电源供电范围内工作；外设接口IO引脚支持的电源供电范围为1.65 V至5.5 V。

  • 所有功能

    • ISO 18092（NFCIP-1）Active P2P
    • ISO14443A、ISO14443B、ISO15693和FeliCa™
    • 支持VHBR（3.4 Mbit/s PICC到PCD帧，6.8 Mbit/s AFE和PCD到PICC帧）
    • 电容式唤醒
    • 自动天线调谐系统，可支持天线LC谐振腔调谐
    • 自动调制指数调整
    • 可自动选择的AM和PM解调器通道
    • DPO（动态功率输出）
    • 差分输出可达1.4 W
    • 用户可选择和自动增益控制
    • 透传和流模式实现了兼容MIFARE™ Classic或其他自定义协议
    • 单端模式下，可驱动两个天线
    • 振荡器输入，使用13.56 MHz或27.12 MHz晶振，可快速启动
    • 6 Mbit/s SPI，具有96字节的FIFO
    • 宽泛的供电电压范围：2.4 V 至5.5 V
    • 宽泛的温度范围：-40 °C至125 °C
    • QFN32，5x5 mm封装或提供晶圆
    阅读更多 阅读较少信息

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Management Design Center

Thermal-electrical Simulators for Components

Signal Conditioning Design Tool

NFC/RFID Calculators

Choose design tool:
Power Management Design Center

Power Supply Design Tool

• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type:
DC/DC
AC/DC
太阳能电池充电器
Power Management Design Center

LED Lighting Design Tool

• Handles AC-DC and DC-DC design in common topologies
• Displays interactive and annotated schematic
• Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type:
DC/DC
AC/DC
Power Management Design Center

Digital Power Workbench

• Provides a step-by-step optimized design of power section and control loop
• Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
Power Management Design Center

Power Tree Designer

• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
Choose design tool:
Thermal-electrical Simulators for Components

AC Switches Simulator

• Select ratings and application waveforms
• Get junction temperature and blocking voltage graphs
• Search and sort suitable devices
Thermal-electrical Simulators for Components

Rectifier Diodes Simulator

• Select ratings and application waveforms
• Estimate power losses
• Search and sort suitable devices
Thermal-electrical Simulators for Components

STPOWER Studio

• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components

Twister Sim

• Help select the right ViPOWER Automotive power device
• Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
• Supports various PCB configurations
Thermal-electrical Simulators for Components

TVS Simulator

• Specify system ratings and surge waveform
• Search and sort suitable devices
Thermal-electrical Simulators for Components

Estimate

• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Choose design tool:
Signal Conditioning Design Tool

Active Filters

• Handles multi-stage-designs and common topologies
• Returns circuit component values
• Provides gain, phase and group delay graphs
• Low Pass, High Pass and Band Pass
Signal Conditioning Design Tool

Comparators

• Handles most common configurations
• Returns circuit components values
• Provides I/O signal waveforms
• Inverting, Non Inverting, Window
Signal Conditioning Design Tool

Low side Current Sensing

• Returns circuit component values
• Provides current error graphs
Signal Conditioning Design Tool

High side Current Sensing

• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
Choose design tool:
NFC/RFID Calculators

NFC Inductance

• Input geometry and substrate properties
• Get antenna impedance
NFC/RFID Calculators

UHF Link Budget

• Enter forward and reverse link characteristics
• The tool returns link budget estimate
NFC/RFID Calculators

NFC Tuning Circuit

• Enter antenna parameter and matching target
• Select the topology of the matching network
• The tool returns component values for the desired design targets

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特别推荐

EDA符号、封装和3D模型

意法半导体 - ST25R3911B

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Please select one model supplier :

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Start your design with SamacSys
Symbols

符号

Footprints

封装

3D model

3D模型

质量与可靠性

产品型号 Marketing Status 包 等级规格 符合RoHS级别 材料声明**
ST25R3911B-AQFT
批量生产
VFQFPN 32 5x5x1.0 mm 工业 Ecopack2
ST25R3911B-AQWT
NRND
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 32 5x5x1.0 mm

Material Declaration**:

PDF XML
More Info

Marketing Status

批量生产

Package

VFQFPN 32 5x5x1.0 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST25R3911B-AQWT

Package:

VFQFPN 5X5X1 32L WETTABLE FLANKS

Material Declaration**:

PDF XML
More Info

Marketing Status

NRND

Package

VFQFPN 5X5X1 32L WETTABLE FLANKS

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST25R3911B-ASWB

Package:

US WF V.I.

Material Declaration**:

More Info

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。

样片和购买

(*) 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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