We are looking at DAC AD9176.
We have a complex signal of 300Mhz bandwidth (300Msym/s IQ pair) to convert to an IF frequency and would like to seek advice on mode selection.
From FPGA, the output by default is digital IQ data both at 300Mbit/s. Because we have requirement of RRC waveform and the interpolation filters inside AD9176 cannot do that, we will need to filter these digital IQ prior to sending to AD9176. In this case, is my understanding correct that the most suitable mode is mode (10,11). With a nyquist x2 interpolation filter of both I and Q at 600M, the input into dac would be 600Msps, complex. with main dac datapath interpolation x4, DAC rate=2.4G and the max IF fcarrier max can be at 1.2G? Thank you.
I have a few questions,
what would be the difference between modes (8,9) and (10,11), is it just that I'm able to get the same result with lesser JESD resources with (8,9) while utilizing both DAC channels?