AnsweredAssumed Answered

AD9789 output signal noise at 2.4GHz

Question asked by nagendra81 on Mar 5, 2012
Latest reply on Mar 9, 2012 by danf

Hi to ALL,

 

I am using AD9789 IC for DAC apllication . our board is same as Evauation Board

but I am observing noise at 2.4 GHz  there is no noise below 2GHz .

    values as shown below

 

     fdac = 2.4Ghz

     fosc = 400 MHz

 

    FTW0 (0x0A)= 0xAA 

    FTW1 (0x0B)= 0xAA

    FTW1 (0x0C)= 0xAA

    

    BPF reg 0  (0x1C)= 0xAA

   BPF  reg 1 (0x1D)= 0x5A

    

please help me regarding this issue .

 

 

Thanks & regards

nagendra

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