PCF7941ATS/3391/2A

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RF transmitters occupy an important position in the world of modern communication and have undergone rapid development over the past few decades. As one of the main types of electronic devices, the application field and working principle of PCF7941ATS/3391/2A receiver is introduced here.

Application field
PCF7941ATS/3391/2A is mainly applied in remote control systems for car, garage and electric doors for security access, wireless doorbell, alarm systems, remote switch for lights and electric appliance, and GPS tracking system. With high sensitivity and standard operation range of 13.56MHz, PCF7941ATS/3391/2A can also be used as IC (Integrated Circuit) card reader and contactless reader.

Working Principle
PCF7941ATS/3391/2A adopts NXP\'s MIFARE technology, which is based on 13.56MHz system RFID (radio frequency identification), which supports one-way communication between tags and readers. It consists of a tiny integrated circuit chip and an antenna coil, and the communication is based on ISO/IEC 14443 A standard. When a separated coil of PCF7941ATS/3391/2A is close the reader, it’s electromagnetic field will induce a voltage in the coil, and the RFID tag will draw power from the emitted field. The power will then be used to energize the integrated circuit in the RFID chip, which in turn produces a data signal that modulates the current in the coil, finally sending data to the reader in the form of the modulated signal.

The modulated signal sent by the RFID tag contains coded data concerning the identity of the tag, and the reader can then read this data. PCF7941ATS/3391/2A can encode any kind of user data, and using a special coding process, it can modify the data stored in its memory. All of this makes it important for applications in door entrance control, RFID identification, etc.

PCF7941ATS/3391/2A is an ideal component for user-friendly, secure, contactless smart card applications including transit, access control, automated fare collection, and many other applications that need information exchange securely. It is an optimal solution for applications such as bus and subway ticketing, parking fees, access control, and other cashless payment programs.

In summary, PCF7941ATS/3391/2A is a RF transmitter with multiple applications. Its special MIFARE technology makes it an ideal component to provide reliability and security for many important tasks. Its feasible and reliable operation has become an invaluable tool for RFID technology, providing conveniences and security to our daily lives.

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