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Name: ST25R3911B-AQFT
Brand: STMicroelectronics
SKU: ST25R3911B-AQFT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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STMicroelectronics ST25R3911B-AQFT

Part No.:: ST25R3911B-AQFT

Manufacturer:: STMicroelectronics

Package:: 32-VFQFN Exposed Pad

Datasheet:: ST25R3911B-AQFT.pdf

Description:: IC RFID READER 13.56MHZ 32QFN

In Stock:: 915

Quantity:: Add To Cart

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ST25R3911B-AQFT Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
ST25R
ProductStatus:
Active
Type:
RFID Reader
Frequency:
13.56MHz
Standards:
ISO 14443, NFC
Interface:
SPI
Voltage-Supply:
2.4V ~ 5.5V
OperatingTemperature:
-40°C ~ 125°C
MountingType:
Surface Mount

ST25R3911B-AQFT this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including ST25R3911B-AQFT price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for ST25R3911B-AQFT to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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ST25R3911B-AQFT information

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ST25R3911B-AQFT Typical application Circuitry Schematics

The ST25R3911B-AQFT is a product from STMicroelectronics, and it belongs to the ST25R family. The ST25R3911B is a high-performance, highly integrated NFC/RFID reader IC, which is especially relevant for enabling contactless communication utilizing ISO14443A/B and ISO15693 standards and NFC functionality in various applications. Main Features:

1. Multi-protocol Support: - It supports various NFC/RFID communication standards, including ISO14443A/B, ISO15693, FeliCa™, and ISO18092 passive and active modes at 106, 212, 424, and 848 kbps.

2. Automatic Antenna Tuning: - The ST25R3911B automatically adjusts its antenna tuning to ensure optimal read range and performance even in dynamic environments.

3. Low-Power Capabilities: - It has low-power modes that can help in optimizing power consumption in applications where power is critical, enabling longer battery life or enhanced energy efficiency.

4. Noise Suppression: - With advanced automatic modulation depth adjustment and an automatic wave shaping feature, it ensures reliable communication even in harsh RF conditions.

5. Integrated Features: - The IC integrates a wide range of features like an RF transceiver, 32-bit CRC, parity generator, and various encoders and decoders suitable for various RF standards, making it a versatile choice for contactless communication.

Key Pins and Functional Blocks:

1. VDD and GND: - Power supply and ground pins to power the integrated circuits.

2. Antenna Pins: - Typically connected to an external NFC/RFID antenna circuit for enabling wireless communication.

3. Communication Pins: - SPI pins (MISO, MOSI, SCLK, and CS) for communication with a microcontroller or another host device.

4. GPIOs: - General-purpose I/O pins that can be used for various ancillary tasks like interrupt signaling, control signaling, etc.

5. Oscillator Pins: - Generally, connected to an external oscillator circuit to provide a clock source for the IC's operation.

6. Auxiliary Pins: - Including additional functions like analog output (AUX), AM/PM modulation control, etc., depending on specific application needs.

Typical Circuit Setup: - Power Supply: - Connect VDD and GND to your power supply, ensuring adherence to the recommended voltage levels mentioned in the datasheet. - Antenna Circuit: - Connect an appropriately designed antenna circuit to the antenna pins, keeping trace lengths short and following any layout guidelines provided in the datasheet or application notes. - Communication Interface: - Connect SPI pins to the microcontroller or host device, ensuring any level shifting is performed if needed and considering proper termination and trace routing. - External Oscillator: - Implement an external oscillator circuit as per datasheet guidelines to ensure accurate and stable clocking. - Decoupling and Filtering: - Use decoupling capacitors close to the power supply pins and employ filtering where necessary to minimize noise. - GPIO Configuration: - Depending on your application, configure GPIO pins for necessary control, status signaling, or auxiliary functions. - Software Setup: - Implement software control and communication through the SPI interface, ensuring protocol adherence and utilizing integrated features effectively for your application.

Note: Always refer to the specific datasheet of the ST25R3911B-AQFT for detailed information regarding pin descriptions, electrical characteristics, antenna design guidelines, and application circuit examples. The datasheet will provide a wealth of information to assist you in creating a reliable, functional design tailored to your application. If you have additional queries or need further guidance, feel free to ask!

ST25R3911B-AQFT FAQ

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3. Are the ST25R3911B-AQFT price and inventory displayed accurate?

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6. What is the process for return or replacement of ST25R3911B-AQFT?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ST25R3911B-AQFT we delivered, we will accept the replacement or return of the ST25R3911B-AQFT only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of ST25R3911B-AQFT.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations