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Intermod level wrt to fundamental reduces with lower input to DAC for AD9364

Question asked by Anjayachary on Nov 10, 2014
Latest reply on Nov 10, 2014 by tlili

We are testing the AD9364 in Non-OS mode with scaling the input to the DAC.

As the input to the DAC reduces, 3rd order intermod with reference to fundamental levels are reducing, where as it is suppose to be other way.

 

And 3rd order intermod absolute levels are remain almost same.

 

Please let us know why intermod levels are becoming poor with lower input to DAC.

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