Hi,
I am using a DAC5687 to do dual channel frequency upconversion of my input data (125 MHz sinusoid with an arbitrary envelope). My current setup is as follows:
I digitally generate my signal at 10 MHz (sampling rate 45 MHz), feed them into the DAC; along with the 45 MHz clock signal into CLK1. DAC settings are detailed in the following picture.
I get signals at 55 MHz, 125 MHz, 235 MHz, 305 MHz...and filter out everything besides the wanted 125 MHz signal.
While this is working well, I am trying (and at the moment failing) to find a way to get the same result using a lower input data rate (below 20 MSPS). The constraints I have are that any other frequencies besides 125 MHz need to be reasonably far away to allow filtering (right now I am using a 100-150 MHz bandpass) and that the output needs to be phase locked (I generate a trigger signal alongside the pulses and my pulse always needs to have the same distance from that trigger with no jitter). Can anyone please tell me if this is possible and if yes point me in a direction? Thanks a lot!
Best Regards,
Andre
