Forum Post: RE: DAC3484 Questions Part 2

thank you, Kang, that was very helpful.

here is an another question regarding clocking: 

Let's assume I'm generating a signal of 10 MHz and sampling it 20 times per period. So I get a sampling frequency of 200 MHz. or 200 MSPS. These 200 MSPS I would like to send on all 4 channels. On the page 47 figure 52 shows that to send a sample (16 bit ) to a channel it needs a half cycle period (because of DDR). Does that mean that I need DATACLK to be working with 100MHz to be able to send 200MSPS to one channel and 400MHz to all 4? Or do I understand it wrong?

How fast should be the DACCLK for 200MSPS on all 4 Channels? 

best regards

den