3.9 GHz RF Downconverter

The SC5305A and SC5306B are three-stage superheterodyne downconverters that deliver superior image rejection over single stage conversion. Designed to meet demanding applications such as cable modem testing, software defined radio development and spectral monitoring, these two modules have both high signal-to-noise dynamic range and high spurious free dynamic range. The excellent spurious free dynamic range is achieved using low noise linear amplifiers, low loss mixers, and high performance solid state attenuators.

Full implementation instructions, GUI, driver software, and example code are provided with each module.

PXI Express Module


Core Module


  • Frequency Range 1 MHz to 3.9 GHz
  • Low residual phase noise < -107 dBc/Hz at 10 kHz offset, 1 GHz carrier
  • Measurement sensitivity -160 dBm/Hz
  • Residual spurs < -110 dBm
  • 3rd order intermodulation < 80 dBc at 0 dBm output level
  • Internal preamplifier
Part Number Product Description
7100012-01 SC5305A, 3.9 GHz RF Downconverter PXI Express
7100058-01 SC5306B, 3.9 GHz RF Downconverter with USB and SPI Interfaces
7100058-02 SC5306B, 3.9 GHz RF Downconverter with USB and RS232 Interfaces

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