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The MLX90121 is an ISO compliant 13.56MHz RFID transceiver integrated circuit.
The main features include user selectable modulation depth in write mode, whereas single sub-carrier ASK, FSK and PSK modulations are recognized in the read mode.
The receiver is based on a diode envelope detector, followed by an IF filter and amplifier. A logarithmic amplifier is used for single subcarrier ASK detection, ensuring fast and clean data recovery. The limiting output of the log amp is used for FSK and PSK recovery.
The transmitter uses a built in open drain output transistor, which can provide up to 250 miliwatts of RF power to a 50 ohms load with a 5 volts power supply using the recommended matching network. This is suitable for most short to mid range applications. A simplified antenna and matching network can be used, at the expense of a reduced reading range, for example in hand-held reader applications.
The chip is configured with a serial interface. A synchronization signal is available when the majority voting is used.
Digital part contains ASK, FSK (423 / 484kHz)and PSK (847kHz) decoders and a programmable encoder to facilitate data handling with a low cost microcontroller. The encoder can be programmed with 6 different patterns.
The chip can also be used as an analog frontend, in direct mode.
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RFID Transceiver.
The RFID Transceiver (Reader) is the device that passed information from the Control Board onto the RFID Tag. Balogh Transceivers are all solid state devices that are designed to be in harsh environments. Balogh Transceivers power up Balogh tags and allow a full-duplex communication line to occor between the RFID Tag and Balogh Control Board.
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RFID Modules
* Range of Cost Effective RF Identification products
* Support for Hitag, Mifare and Marin Protocols
* Evaluation Kits for rapid development
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EM4102 :125KHz, 64 bit read only CID for direct coil connection
EM4100 :125KHz, 64 bit read only contactless identification device
EM4056 :125KHz, 2 Kbit Read write contactless identification device with anti-collision
EM4450/4550 :125KHz, 1 KBit read/write contactless identification device EM4122 Read-only UHF RFID IC with 64 bit unique ID Number (replaces
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