Low-Cost Downconverter with Low-Noise Amplifier

Please check latest availability status for a specific part variant.


The MAX2406 low-noise amplifier (LNA)/downconverter mixer is designed for use over a wide range of frequencies and is optimized for communications systems operating at a frequency of 1.9GHz. Applications include PWT1900/DCT1900, DCS1800/PCS1900, PHS, and DECT. This device includes an LNA, a downconverter mixer, and a local-oscillator (LO) buffer in a low-cost, plastic surface-mount package. At 1.9GHz, the LNA has 2.5dB typical noise figure and a -9.5dBm input third-order intercept point (IP3). The downconverter mixer has a low 9.1dB noise figure and a 4.5dBm input IP3. Image and LO filtering are implemented off-chip for maximum flexibility.

The MAX2406 has a differential IF port that can be used in a single-ended configuration by tying the unused side to VCC. The LO buffer can be driven differentially or in a single-ended configuration with only -10dBm of LO power. Power consumption is 60mW in receive mode, and typically drops to less than 1µW in shutdown mode.

For transceiver applications, the MAX2410 or MAX2411A both offer a transmitter along with a similar receiver.

Key Features

  • Integrated LNA/Downconverter
  • 3.2dB Combined Receiver Noise Figure:
    • 2.5dB (LNA)
    • 9.1dB (mixer)
  • -12.5dBm Combined Receiver Input IP3:
    • -9.5dBm (LNA)
    • 4.5dBm(mixer)
  • LO Buffer
  • +2.7V to +5.5V Single-Supply Operation
  • 60mW Power Consumption
  • Low-Power Shutdown Mode


  • DCS1800 or PCS1900 Single-Mode Phones
  • DECT
  • PWT1900/DCT1900

Technical Documents

Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
Product Reliability Reports: MAX2406.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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