James Bond
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Hi, ACWWong and aaron_do, thanks for your replies.
to ACWWong: I checked the vco output , it's not a perfect sine, but it's clean, even just before the polyphase filter, the input is still clean.
to aaron_do: could you please explain "if you connect the input as ++ -- instead of +gnd - gnd you can get a cleaner signal and the output dc level will be the same" in details ? dc level are not the same is also another question, thanks for reminding me.
Thank you very much.
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