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DDS AD9953 output is too low

Question asked by ryu on Aug 28, 2011
Latest reply on Sep 2, 2011 by KennyG

Hi,

 

I using AD9953 for a single tone generator.

My circuit is working when i changed clock source from singgle ended PLL to x-tal oscillator.

But output is too low, the output level is -52dBm with -75dBm white noise.

My expectaion is that over -10dBm which is shown in datasheet.

My configuration of resister is that. CFR1=0x00 00 02 00, CFR2=0x00 02 30.

 

How can i debug my circuit to increase output level?

 

best regards,

Ryu.

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