Overview
The ST25R3916B-AQWT, produced by STMicroelectronics, is a high-performance NFC universal device designed to support various NFC modes including initiator, target, reader, and card emulation. This device is optimized for contactless payment, device-pairing, wireless-charging, brand protection, and other industrial and consumer applications. It is fully compliant with EMVCo 3.1a analog and digital standards, making it particularly suitable for POS terminal applications and enabling fast EMVCo certification cycles even in harsh conditions.
Key Specifications
| Attribute | Specification |
|---|---|
| Type | Read |
| Clock Frequency-Max | 13.56 MHz |
| Supply Current | 17 mA |
| Supply Voltage | 2.4 V to 5.5 V |
| Operating Temp Range | -40°C to +105°C |
| Storage Temperature Range | -65°C to +150°C |
| No of Terminals | 32 |
| Moisture Sensitivity Level | 3 |
| Package Style | VFQFPN-32 |
| Mounting Method | Surface Mount |
Key Features
- Supports NFC initiator, NFC target, NFC reader, and NFC card emulation modes.
- Compliant with EMVCo 3.1a analog and digital standards, optimized for POS terminal applications.
- Dynamic power output (DPO) controls the field strength to stay within given limits.
- Active wave shaping (AWS) reduces over- and undershoots.
- Noise suppression receiver (NSR) allows reception in a noisy environment.
- Automatic antenna tuning (AAT) via variable capacitor.
- Integrated EMVCo 3.1a-compliant EMD handling.
- Low-power NFC active and passive target modes.
- Adjustable ASK modulation depth, from 0 to 82%.
- Integrated regulators to boost system PSRR.
- AM/PM and I/Q demodulator with baseband channel summation or automatic channel selection.
- Possibility to drive two independent single-ended antennas.
- Measurement of antenna voltage amplitude and phase, RSSI, on-chip supply, and regulated voltages.
- External communication interfaces: SPI up to 10 Mbit/s, I2C with up to 400 kbit/s in Fast-mode, 1 Mbit/s in Fast-mode Plus, and 3.4 Mbit/s in High-speed mode.
Applications
- Contactless payment systems.
- Device-pairing and wireless-charging applications.
- Brand protection and authentication.
- Industrial and consumer applications, including POS terminals and other infrastructure NFC uses.
Q & A
- What is the ST25R3916B-AQWT used for?
The ST25R3916B-AQWT is used for various NFC applications, including contactless payment, device-pairing, wireless-charging, and brand protection.
- What are the operating modes of the ST25R3916B-AQWT?
The device supports NFC initiator, NFC target, NFC reader, and NFC card emulation modes.
- Is the ST25R3916B-AQWT compliant with EMVCo standards?
Yes, it is fully compliant with EMVCo 3.1a analog and digital standards.
- What is the supply voltage range of the ST25R3916B-AQWT?
The supply voltage range is from 2.4 V to 5.5 V).
- What is the operating temperature range of the ST25R3916B-AQWT?
The operating temperature range is from -40°C to +105°C).
- What package style does the ST25R3916B-AQWT come in?
The device comes in a VFQFPN-32 package style).
- Does the ST25R3916B-AQWT support low-power modes?
Yes, it includes low-power NFC active and passive target modes).
- What communication interfaces does the ST25R3916B-AQWT support?
The device supports SPI, I2C, and other external communication interfaces).
- Can the ST25R3916B-AQWT drive multiple antennas?
Yes, it can drive two independent single-ended antennas).
- What is the purpose of the automatic antenna tuning (AAT) feature?
The AAT feature is used via a variable capacitor to optimize antenna performance).
