I have some questions about NCO function.
My Design Requirements: output BW = 300MHz, Center frequency = 800MHz.
My Design Plan:
1.since BW = 300MHz, the minimum data rate = 600MHz, considering FIR filter limit useful BW to about 40% of data rate,so minimum data rate = 750MHz.
2.Center frequency = 800MHz, upper frequency = 950MHz, so minimum DAC sample rate = 1900Msps.
so, i choose data rate = 1000MHz, with 2x interpolation ,DAC sample rate = 2000Msps.
I tend to use as more channel as possible,my question is :
1.can i use AD9144 in 4 independent mode and with NCO enabled for my design?
2.if YES,what NCO frequency should be?
I need your professional suggestion,looking forward to your reply!