Hello,

According to the bloc diagram, the RF channel bandwith range is 200kHz-56MHz, so the I and Q filters bandwidth range is 100kHz-28MHz.

According to the reference manual UG-570 p.9, the I and Q filters bandwidth range is 200kHz-28MHz, so the RF channel bandwdith range is 400kHz-56MHz.

According to the AD9361 Filter Guide p.5, the corner frequency range is 200kHz-39.2MHz. Considering that the corner frequency is typically calibrated to 1.4 times the baseband channel bandwidth, the I and Q filters bandwidth range is 143kHz-28MHz. So the RF channel bandwdith range is 286kHz-56MHz.

So, there is no doubt that the maximum RF channel bandwith is 56MHz.

But, what is the minimum RF channel bandwith? 200, 286 or 400kHz? Where are the errors?

Thank you in advance.

Best Regards,

Vincent

The 1.4 times your channel bandwidth is a rule of thumb which the driver will use, and what the filter wizard will use GitHub - analogdevicesinc/ad936x-filter-wizard: MATLAB-based FIR filter design . However this bandwidth can be tuned down to 200kHz manually, which is independent of the output FIR rate. 200kHz is the minimum complex bandwidth that can be tuned for the part.

-Travis