I am using the AD9833 on a custom designed PCB board to generate a sine signal in various frequencies.
My desired frequencies are in the range of 1khz up to 10khz.
I am using a 50Mhz external oscillator, because i had no 25Mhz clock.
Somehow the output voltage decreases with increasing frequencies.
Here is my schematic:
And here are some sample measurements:
6k hz 530mVpp
Any advice or theory why the voltage drops?
I guess it's either due to the clock or the connected GNDs.
Thanks in advanced!