I want to use AD9910+ADF4350 to obtain a wide frequency bandwith and good channel resolution,NOW i don't know they wil work together and have good result?
Expecting your answer! Thank you!
I assume you're using the DDS in the feedback divider for the ADF4350. The AD9910 should not be an issue for choice, however the AD9912 has 48-bits of frequency resolution verses 32-bit for the AD9910 if that's desired.
Make sure you have good DAC reconstruction filter with good stop band performance. See AN-837 and AN-823. I'm not familiar with ADF4350 but it's minimum input swing per the data sheet looks to be 700mV. So you might need to increase the DAC full scale current of the DDS to maximize the output swing and use a transformer to couple the DDS output. This to manage any output voltage compliance issues. Also, you might try make the DAC reconstruction filter 100 ohms impedance verses 50 ohms to increase swing too.
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