关于AD9704的应用问题

Hello,  

Pls write the question in English, thanks!   

AD9704 is one AC DAC @ max DAC rate fs=175Msps,   the maximum bandwidth is fs/2,   Firstly ,you should calculate the wanted signal bandwidth,  if that is <fs/2,  that is fine.  BTW,  you should put some margin on the bandwidth to ensure the  construction filter to be easy built.   if the DAC output level is not enough,   op-amp can amplify the  DAC output to your wanted level. 

OK,we note that the AD9704 settling time is 11ns，Will it affect the  bandwidth？