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Not recommended for new designs. The MLX71120 is a multi-band, single-channel RF receiver based on a double-conversion superheterodyne architecture. It can receive frequency-shift keying (FSK) and amplitude-shift keying (ASK) modulated signals.

The IC is designed for general purpose applications for example in the European bands at 433 MHz and 868 MHz or for similar applications in North America or Asia, for example at 315 MHz or 915 MHz. It is also well-suited for narrow-band applications according to the ARIB STD-T67 standard in the frequency range 426 MHz to 470 MHz.

The receiver’s extended temperature and supply voltage ranges make the device a perfect fit for automotive or similar applications where harsh environmental conditions are expected.

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Top features

  • Dual RF input for antenna space and frequency diversity, LNA cascading or differential feeding

  • Fully integrated PLL-based synthesizer

  • 2nd mixer with image rejection

  • Reception of ASK or FSK modulated signals

  • Wide operating voltage and temperature ranges

  • Very low standby current consumption

  • Low operating current consumption

  • External IF filters 455 kHz or 10.7 MHz

  • Internal FSK demodulator

  • Average or peak detection data slicer mode

  • RSSI output with high dynamic range for RF level indication

  • Output noise cancellation filter

  • MCU clock output

  • High over-all frequency accuracy
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Evaluation board for MLX71120 - EVB71120

Features and benefits

  • Dual RF input for antenna space and frequency diversity, LNA cascading or differential feeding

  • Fully integrated PLL-based synthesizer

  • 2nd mixer with image rejection

  • Reception of ASK or FSK modulated signals

  • Wide operating voltage and temperature ranges

  • Very low standby current consumption

  • Low operating current consumption

  • External IF filters 455 kHz or 10.7 MHz

  • Internal FSK demodulator

  • Average or peak detection data slicer mode

  • RSSI output with high dynamic range for RF level indication

  • Output noise cancellation filter

  • MCU clock output

  • High over-all frequency accuracy

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