AD9850 Amplifier and filter

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Joined Jun 21, 2009

I have the AD9850 producing frequencies between 1hz and 20HZ.
The output voltages drops from 1vpk-pk to 0.25v pk-pk at 20Mhz.
That IC also has a lot of noise.
I was thinkking of adding the AD8331 at the output of the AD9850 as a filter and voltage stabalizer so I can get a steady 5v pk-pk.
I also saw the AD602 IC but it very costly.
Any have done this before ?
amplifyer a variable and noisy DDS signal ?