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will the DDC(AD9625) function introduce the dc offset?

Question asked by hawkgreen on Apr 28, 2015
Latest reply on Apr 29, 2015 by UmeshJ

AD9625/AD9680 have the function of DDC,I want to use the function ,and the mode:0Hz IFmode.But in the other system,the 0Hz IF mode will bring in dc offset ,dc offset will reduce SFDR of the system.

I want to know if I use the DDC ZERO IF mode of AD9625/AD9680 ,will these chips bring in the dc offset?and if it is,how strong will it effect the SFDR .I can not find any test figure of the ZERO IF mode in the PDF of AD9680/AD9625.

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