Design Win

RAIN RFID单芯片读卡器,可与EPC Class1 Gen2相兼容




在840-960 MHz UHF频段,ST25RU3993 RAIN® (UHF) RFID读卡器设备提供多协议支持,并与ISO18000-62 & -63、ISO29143和GS1的EPC UHF Gen2空中接口协议兼容。它包括一个片上VCO和一个功率放大器,可提供一整套RFID功能,包括密集读写器模式(DRM)功能,并能支持跳频、低电平传输编码、低电平解码、数据成帧和CRC校验。


ST25RU3993采用7x7 mm QFN封装,具有很高的灵敏度,并能抵抗天线反射和自干扰的影响。这对于移动应用和嵌入式应用非常重要,在这些应用中天线设计常受到成本或尺寸的限制。其高灵敏度使得终端产品在使用更简单更便宜的天线时,也能实现其所需的读取范围,从而可以降低整个系统成本。


  • 所有功能

    • 供电电压范围为3.0至3.6 V
      • 有限工作电压可低至2.7 V
      • 最大PA供电电压为4.3 V
      • 外设I/O电源范围为1.65至5.5 V
    • 协议支持:
      • ISO 18000-6C(EPC Class1 Gen2)
      • ISO 29143(移动RFID的空中接口)
      • 直接模式的ISO 18000-6A/B
    • DRM:用于M4和M8的250 kHz和320 kHz滤波器
    • 集成电源稳压器
    • 支持跳频
    • ASK或PR-ASK调制
    • 自动I/Q选择
    • 采用8位线性RSSI的标签跟踪相位位
    • 温度范围:-40 °C至85 °C
    • 48引脚QFN(7x7x0.9 mm)封装
    • 标签读取速度最快可达到700*标签/秒(16位标签EPC长度)


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 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:

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:

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 Tree Designer

Specify input/output power for each node in the tree
Check for consistency
Design each individual node
Choose design tool:

AC Switches Simulator

Select ratings and application waveforms
Get junction temperature and blocking voltage graphs
Search and sort suitable devices

Rectifier Diodes Simulator

Select ratings and application waveforms
Estimate power losses
Search and sort suitable devices


Supports long mission profiles
Provides power loss and temperature graphs
Helps define heatsink thermal properties

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

TVS Simulator

Specify system ratings and surge waveform
Search and sort suitable devices


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:

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


Handles most common configurations
Returns circuit components values
Provides I/O signal waveforms
Inverting, Non Inverting, Window

Low side Current Sensing

Returns circuit component values
Provides current error graphs

High side Current Sensing

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

NFC Inductance

Input geometry and substrate properties
Get antenna impedance

UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

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


STMicroelectronics - ST25RU3993

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 :





3D model