Overview
The ST25R3917-AQWT, produced by STMicroelectronics, is a high-performance NFC universal device. It supports multiple NFC modes, including NFC initiator, NFC target, NFC reader, and NFC card emulation. This device is designed to meet the stringent requirements of various NFC applications, ensuring robust and reliable communication.
With its advanced features and compliance with several NFC standards, the ST25R3917-AQWT is suitable for a wide range of applications, from payment systems to consumer electronics.
Key Specifications
| Parameter | Description |
|---|---|
| Operating Modes | Reader/writer, Card emulation, Active and passive peer to peer |
| RF Communication | EMVCo 3.0 analog and digital compliant, NFC-A / ISO14443A up to 848 kbit/s, NFC-B / ISO14443B up to 848 kbit/s, NFC-F / FeliCa™ up to 424 kbit/s, NFC-V / ISO15693 up to 53 kb/s |
| Frequency | 13.56 MHz |
| Supply Voltage | 2.4 V to 5.5 V |
| Operating Temperature | -40°C to +105°C |
| Package | 32-VFQFN Exposed Pad |
| Interface | SPI up to 10 Mbit/s, I2C up to 3.4 Mbit/s |
| Standards | FeliCa, ISO 14443, ISO 15693, MIFARE, NFC |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
Key Features
- Dynamic power output (DPO) controls the field strength to stay within given limits
- Active wave shaping (AWS) reduces over- and under-shoots
- Noise suppression receiver (NSR) allows reception in noisy environments
- Automatic antenna tuning (AAT) via variable capacitor
- Integrated EMVCo 3.0 compliant EMD handling
- Automatic gain control and squelch feature to maximize SNR
- Low power capacitive and inductive card detection
- Low power NFC active and passive target modes
- Adjustable ASK modulation depth, from 5 to 40%
- Integrated regulators to boost system PSRR
- AM/PM and I/Q demodulator with baseband channel summation or automatic channel selection
Applications
The ST25R3917-AQWT is versatile and can be used in various applications, including:
- Payment systems: Compliant with EMVCo 3.0, it is suitable for contactless payment solutions
- Consumer electronics: Supports NFC reader, writer, and card emulation modes, making it ideal for smartphones, tablets, and other consumer devices
- Access control: Can be used in access control systems due to its support for various NFC standards
- Healthcare: Suitable for medical devices that require secure and reliable NFC communication
Q & A
- What are the operating modes of the ST25R3917-AQWT?
The ST25R3917-AQWT supports reader/writer, card emulation, and active and passive peer to peer modes
- What frequency does the ST25R3917-AQWT operate at?
The device operates at a frequency of 13.56 MHz
- What is the supply voltage range for the ST25R3917-AQWT?
The supply voltage range is from 2.4 V to 5.5 V
- What are the supported NFC standards?
The device supports FeliCa, ISO 14443, ISO 15693, MIFARE, and NFC standards
- What is the operating temperature range of the ST25R3917-AQWT?
The operating temperature range is from -40°C to +105°C
- What package type is the ST25R3917-AQWT available in?
The device is available in a 32-VFQFN Exposed Pad package
- Does the ST25R3917-AQWT support SPI and I2C interfaces?
Yes, it supports SPI up to 10 Mbit/s and I2C up to 3.4 Mbit/s
- Is the ST25R3917-AQWT RoHS compliant?
Yes, the device is ROHS3 compliant
- What is the moisture sensitivity level (MSL) of the ST25R3917-AQWT?
The MSL is 3 (168 Hours)
- What are some key features of the ST25R3917-AQWT?
Key features include dynamic power output, active wave shaping, noise suppression receiver, and automatic antenna tuning, among others
