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The MLX71121 is a multi-band, single-channel RF receiver based on a double-conversion superheterodyne architecture. It can receive FSK and 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.

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

  • Internal IF filter

  • 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 MLX71121 - EVB71121

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

  • Internal IF filter

  • 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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