the ADC full-scale output voltage Vpk is 1.625V, it equal to 2048 code.
when i using MGC, and select rx gain index 66, it is 63dB rx gain, NF is about 5dB, when i terminated rx input 50 ohm, configure RX BW to 10MHz, the ADC noise output power can be caculate below:
Pout = -174dBm/Hz + 10*log(BW) + rx gain + NF
so the ADC noise output power will be -36dBm, 2.51e-7W, and the noise rms voltage is 3.54mV; the ADC code of 3.54mV is 4 or 5;
is it correct? i should see the ADC noise output I+JQ rms voltage code to be 4~5 in the matlab FFT?