To achieve specified RF-ADC performance, certain calibration mode must be set correctly according to the signal location. The available calibration modes are listed as follows:
- Mode 1, optimized for the input signal locates from 0.4 * Fs to Fs/2
- Mode 2, optimized for the input signal locates from 0 to 0.4 * Fs
The above location refers to the input signals in the first Nyquist band after aliasing.
- AutoCal Mode
- This mode is available in Gen 3/DFE. The AutoCal mode removes
the manual selection of Mode 1 and Mode 2 calibrations and optimizes the
RF-ADC performance regardless of signal
locations. Recommended: Xilinx recommends testing between AutoCal mode and legacy Mode 1 and Mode 2 to assess which offers ideal RF-ADC performance. Setting to AutoCal mode affects convergence time.