Transceiver with integrated 3D LF receiver - 300 to 930 MHz

MLX73290-A

Obsolete product - Not for new designs.

The MLX73290-A combines a highly integrated RF transceiver for long range, high speed communication and a 3 dimensional low frequency interface (3DLF) for low power wake-up. This unique combination makes the MLX73290-A suitable for applications requiring a very low power wake-up function together with long range, high speed RF feedback.

The transceiver part allows for multi-channel operation including frequency hopping in the European bands (433 and 868 MHz) as well as in North America or Asia bands (315 or 915 MHz). The output power, frequency channel, modulation type and frequency deviation are programmable. Thanks to the high frequency resolution and phase noise performance of its fractional-N PLL, the MLX73290-A is fit for narrow-band operation. There are two selectable modulation schemes: binary on-off keying (OOK) and binary frequency shift keying (FSK) as well as their Gaussian filtered versions. The low-IF receiver part comprises fully digital demodulation and self-polling features together with channel scanning and built-in packet recognition.

The 3DLF interface features an automatic and programmable wake-up algorithm together with an integrated data decoder to receive the payload. Monitoring independently the RSSI information from the 3-axis LF front-ends allows precise monitoring of the received LF field. Thanks to its internal rectifier, power management and load modulator, the MLX73290-A is capable of battery-less LF RFID tag operation.

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Top features

  • On-chip combination of 3DLF and RF technologies

  • 3DLF interface for low power wake-up (battery-less mode possible)

  • Multi-band (300 to 960 MHz) RF transceiver for long range, high speed communication

  • RSSI information for both LF and RF interfaces

  • Supply voltage range of 2.1 to 3.6 volt

  • 32L QFN5x5 package
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Transceiver with integrated 3D LF receiver - 300 to 930 MHz - MLX73290-A

Features and benefits

  • On-chip combination of 3DLF and RF technologies

  • 3DLF interface for low power wake-up (battery-less mode possible)

  • Multi-band (300 to 960 MHz) RF transceiver for long range, high speed communication

  • RSSI information for both LF and RF interfaces

  • Supply voltage range of 2.1 to 3.6 volt

  • 32L QFN5x5 package

Practical application

Car Immobilizer

Advanced and high performance security system-on-a-chip solution that prevents the car engine from running unless the correct key is present.

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