Features and Benefits

  • Receiver Wide Input Dynamic Range
    • -15dBm to +5dBm in 50Ω
  • Variable Transmitter Output Level from +7dBm to +12dBm
  • AISG-Compliant Output Emission Profile
  • AutoDirection Output
  • No Need of Microcontrollers to Handle Bus Arbitration in Tower-Mounted Equipment
  • Supports All AISG Data Rates
    • 9.6kbps
    • 38.4kbps
    • 115.2kbps
  • Bandpass Filter Compliant with AISG Protocol Centered Around 2.176MHz
  • 3.0V to 5.5V Voltage Supply
  • Independent Logic Supply
  • Small, 3mm x 3mm 16-Pin TQFN Package

Product Details

The MAX9947 is an AISG-compliant, fully integrated transceiver.

The MAX9947 receiver offers a typical dynamic range of 20dB and integrates a bandpass filter that operates in the 2.176MHz frequency with a narrow 200kHz bandwidth.

The MAX9947 transmitter integrates a bandpass filter that is compliant with the AISG spectrum emission profile. It can modulate OOK signals up to 115.2kbps. The output power can be varied with external resistors from +7dBm to +12dBm to compensate for loss in the external circuitry and cabling.

The MAX9947 also features a direction output to facilitate the RS-485 bus arbitration in tower-mounted equipment.

The MAX9947 is available in a small, 3mm x 3mm 16-pin TQFN and is rated for operation in the -40°C to +105°C temperature range.


  • Base Stations
  • Tower Equipment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.