ST25R3910-BQFT-100 RF/IF and RFID

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Type:	RFID Reader
Frequency:	13.56MHz
Standards:	ISO 14443, NFC
Interface:	SPI
Voltage - Supply:	2.4 V ~ 3.6 V
Operating Temperature:	-40°C ~ 85°C
Package / Case:	32-VFQFN Exposed Pad
Supplier Device Package:	32-QFN (5x5)

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ST25R3910-BQFT-100 application field and working principleSince the advent of RFID technology, the demand for RFID applications has risen significantly. RFID usage is now integral to many facets of daily life, from retail inventory control to security access and asset tracking. This article will discuss the ST25R3910-BQFT-100 and its applications, as well as its components and working principles.The ST25R3910-BQFT-100 is an RFID Radio Frequency (RF) IC made by STMicroelectronics. It is a low-cost yet reliable solution to a multitude of RFID applications. This IC is suited for HF (13.56 MHz) as well as UHF (433 MHz/868 MHz, 915 MHz) systems. It can work in four different modes: Standalone, Networked, ID Only, and Command Mode. The IC offers several features, including a built-in tag detector, a tag detection status pin, intelligent tag operation, data polling and transmission, NDEF tags read and write support, and possible connection of external antennas. It also supports various scanning speeds, including fast scan, enabling fast communication with tags.The ST25R3910-BQFT-100 is suited for a multitude of applications, such as asset tracking and management, access control, smart cities and buildings, and data loggers and recorders. It can be used to detect objects near their location or within a certain range, and it can also be used to track objects moving in and out of this range.The ST25R3910-BQFT-100 is made up of two main modules: an Applications Processor (AP) and a Radio Frequency (RF) transceiver. The AP controls the communication with tags. It is a 32-bit low power microcontroller capable of handling tag commands and decoding them into data. The RF transceiver module is responsible for transmission and reception of data between tags and the host. It consists of multiple components, such as mixers, amplifiers, frequency synthesizers, and an antenna.The working principle of the ST25R3910-BQFT-100 is quite straightforward. When a tag is in range, the RF transceiver module detects its presence and communicates with it. Then, the AP processes the tag’s data and sends the data to the host through the RF transceiver. Upon reception, the host can store the data, modify its contents, or request additional information from the tag. Based on the host’s commands, the AP can take certain actions, such as updating tag data or making adjustments to the tag’s settings.In conclusion, the ST25R3910-BQFT-100 is a versatile IC that can be used for a variety of RFID applications. It is made up of an Applications Processor and an RF transceiver, which work together to detect tags and exchange data between them and the host. The wide range of features and applications makes the ST25R3910-BQFT-100 an ideal solution for RFID applications.

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