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André Huntrieser
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Günter Fuchs
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Raphael Balke
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Karl Eder
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Obsolete product - Not for new designs. 


The MLX73290-M is a 299 to 960MHz multi-channel transceiver chip. The IC is designed for general purpose applications for example in the European bands at 433MHz and 868MHz or for similar applications in North America or Asia, e.g. at 315MHz or 915MHz. It is also well-suited for narrow-band applications which meet the ARIB standard STD-T67 in the frequency range 426MHz to 470MHz.
The output power, frequency channel, modulation type and frequency deviation are programmable via the serial programming interface (SPI). The synthesizer operates with a fractional-N PLL and VCO with integrated inductor.
The high frequency resolution of the MLX73290-M and its PLL phase noise performance facilitate it for narrow-band applications. There are six selectable modulation schemes: on-off keying (OOK), binary frequency shift keying (FSK), minimum shift keying (MSK) as well as their Gaussian filtered versions (GFSK, GMSK, GOOK).
The low-IF receiver part comprises fully digital demodulation and self-polling features together with channel scanning and packet recognition.

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Features Application examples
  • Multiband frequency coverage from 299MHz up to 960MHz
  • Flex TX/RX RF frontend with two PA's and two LNA's
  • Transmitter with power detectors
  • Receiver with digital RSSI
  • Receiver self-polling with MCU wake-up
  • Modulation schemes supported:
    (G)FSK, (G)MSK, (G)OOk
  • Transmitter power from -20 to 13dBm, 64 steps
  • Receiver sensitivity from -120dBm (FSK, 433MHz, 15kHz CHBW)
  • Supply voltage range from 2.1V to 3.6V
  • Temperature range from -40°C to +105°C
  • Energy harvesting interface
  • PLL synthesizer with 60Hz resolution
  • Channel filter bandwith from 9kHz to 600kHz
  • Data rate from 0.3 to 250kbps (GFSK)
  • FSK deviation (programmable in steps) +/-125kHz
  • 32MHz crystal frequency
  • Comprehensive supply monitoring & error handling capabilitites
  • Multi-channel sensing and packet recognition
  • SPI programmable in stand-by mode
  • 256byte FIFO (can be split 128/128 for RX/TX)
  • 4 programmable GPIO ports
  • 32L QFN 5x5 package
  • Compliant to EN 300 220, DASH7, FCC part 15, ARIB STD-T67, IEEE802.15.4 and other standards
  • Automatic meter reading (AMR)
  • Wireless access control
  • Home and building automation
  • Alarm and security systems
  • Remote controls
  • Garage door openers
  • Sensor networks
  • Industrial appliances
  • Medical appliances
  • Telemetry systems