I have tried to come up with a schematic of using AD9838. I used the eval. board schematic and modified it to my needs. The eval. board schematic can be found on page 9 here:
And my versions looks like this:
I have some concrete questions:
The capacitor marked with red is not recommended in the data sheet and I don't know if it has any big effect except noise reduction. Should I keep it or not?
The capacitor marked with green, I can not mentioned in the data sheet and I want to know what it does and if I have to include it.
The two capacitors marked with blue is also not mentioned and I wonder how they effect the signal.
The capacitors marked with yellow I assume are the bypass/decoupling caps?
This circuit can be used with a 16 MHz crystal oscillator. I only have the HC-49 crystal and the recommended one is a Epson SMD with 3 ports. Can I connect the HC-49 directly to the MCLK pin or do I need to add additional components (resistor, capacitors?). This should be in the area marked pink. What do you recommend?
Any other corrections/improvements are appreciated!
Here is the data sheet of the AD9838