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STMicroelectronics RF Transceiver, 32-Pin QFN Package, SPI Interface, 27.12MHz Operating Frequency, 2.4-5.5V ST25R3911B-AQFT
Specifications
| Country of Origin | Korea |
|---|---|
| Brand | STMicroelectronics |
| Height | 0.95mm |
| Length | 5mm |
| Model | ST25R3911B-AQFT |
| Width | 5mm |
| Mount Type | Surface |
| Series | ST25R3911B |
| Maximum Operating Temperature | 125°C |
| Package Type | QFN |
| Sub Type | Transceiver |
| Minimum Operating Temperature | -40°C |
| Interface Type | SPI |
| Pin Count | 32 |
| Maximum Supply Voltage | 5.5V |
| Minimum Supply Voltage | 2.4V |
| Modulation Technique | AM |
| Operating Band 1 Frequency | 27.12MHz |
| Number of Operating Bands | 1 |
Key Features
- Operates at 27.12MHz frequency, ideal for NFC infrastructure applications.
- Supports SPI interface for efficient communication with external microcontrollers.
- Low power operation with supply voltage range from 2.4V to 5.5V.
- Wide operating temperature range from -40°C to 125°C for robust performance.
- Contains two differential low impedance antenna drivers with automatic antenna tuning technology.
- Equipped with a low power capacitive sensor for card presence detection without field activation.
- Compact dimensions of 5mm x 5mm x 0.95mm ensure easy PCB integration.
- Surface mount type QFN package enhances ease of assembly and reliability.
Product Description
STMicroelectronics ST25R3911B-AQFT is a highly integrated RF Transceiver designed for NFC Initiator and High-Frequency (HF) Reader applications. Packaged in a compact 32-Pin QFN surface mount package measuring 5mm by 5mm with a height of 0.95mm, this device provides excellent RF performance and flexibility for the infrastructure side of NFC systems.
Operating at a frequency of 27.12MHz and supporting a SPI interface, the ST25R3911B-AQFT allows seamless data communication with external microcontrollers. It is optimized for low power consumption with a supply voltage from 2.4V to 5.5V and a robust temperature range from -40°C to 125°C, suitable for demanding industrial and commercial environments.
The transceiver features two differential low impedance antenna drivers (1 Ohm) aided by Automatic Antenna Tuning (AAT) technology, ensuring optimal antenna performance. Additionally, a low power capacitive sensor enables detection of card presence without activating the RF field, enhancing power efficiency.
Operates at 27.12MHz frequency suitable for NFC applications. 32-Pin QFN surface mount package with compact dimensions. Supports SPI interface for efficient system integration. Low power capacitive sensor for card detection without RF activation.
Wide supply voltage range of 2.4V to 5.5V for flexible power options. Reliable operation across a broad temperature range (-40°C to 125°C). Automatic Antenna Tuning for optimal RF efficiency. Compatible with standard and custom HF protocols like MIFARE Classic.
Manufactured in Republic of Korea with stringent quality standards.
This RF Transceiver is ideal for Industrial, Communication, NFC infrastructure, and Wireless module applications, providing excellent performance and flexibility with low power consumption. It supports integration in various commercial and industrial use cases requiring secure and efficient HF communication.
Discover more products in the RF Transceiver IC category on EnvMart for advanced semiconductor solutions from leading brands like STMicroelectronics.
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Frequently Asked Questions
This model operates at a frequency of 27.12MHz, making it suitable for NFC applications.
It supports a supply voltage range from 2.4V to 5.5V, allowing for flexible power options.
The package dimensions are 5mm x 5mm with a height of 0.95mm, designed for easy PCB integration.
It has a wide operating temperature range from -40°C to 125°C, suitable for industrial environments.
This model is ideal for NFC infrastructure, industrial communication, and wireless module applications.
It has a pin count of 32, which is standard for its package type.
The transceiver employs AM (Amplitude Modulation) technique for its RF communication.
It is manufactured in Korea, adhering to stringent quality standards.
The height of this model is 0.95mm, contributing to its compact design.
It features a surface mount type, enhancing ease of assembly and reliability.
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