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ADC in AD9361


    Hi all,

    Does anyone know further details about the ADC used in AD9361? I would like to know the main specifications or, at least, what is the voltage range of detection at the input, in particular the minimum detectable noise. I read somewhere that the maximum input is 0.625 V (o dBFS), but not sure whether this is correct.

    Many thanks in advance.

    • From page 35 of the user guide, "The ADC maximum input (0 dBFS) is 0.625 V peak. However, to avoid compression the maximum recommend peak input level to the ADC is 0.5 V peak, which is 1.9 dB lower than full scale."

      As for minimum detectable signal, the datasheet contains typical noise figure values that can be expected at 800 MHz, 2.4 GHz and 5.5 GHz. Using the bandwidth of your application's test signal, MDS can calculated from the equation,

      MDS (dBm) = 10log10(Boltzmann constant x temp. in kelvin) + Noise Figure (in dB) + 10log10(bandwidth)