Hello,
For a sample rate of 192 ksps, I require a higher bandwidth than the offered by Filters type C. Specially in the case of decimation, where band pass is limited to 20 kHz.
As filters A have a bandwidth of 0.39 fs (0.39 x 192000 Hz = 74880 Hz) for decimation and 0.45 fs (0.45 x 192000 Hz = 86400 Hz) for interpolation, I have selected them through PRB_R1 and PRB_P1.
For these filters to work, I have set oversampling ratio to 64 (AOSR and DOSR).
With that configuration, my initial tests have worked well.
The point is that I am setting DAC_MOD_CLK and ADC_MOD_CLK to 12.288 MHz (192000 Hz x 64) when the Reference Manual document states that the maximum frequency for DAC_MOD_CLK and ADC_MOD_CLK is 6.758 MHz.
What are the drawbacks of setting DAC_MOD_CLK and ADC_MOD_CLK to 12.288 MHz? Is there some kind of loss of performance?
Thanks,
Miguel
