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AD9957 differential output circuit problem

Question asked by Jhon on Dec 6, 2017
Latest reply on Dec 6, 2017 by KennyG

My AD9957 board is designed according to the AD9957 evaluation board, the output circuit is like the figure below. R43 is not installed, R7 and R9 is 50 ohm. But I find the output power is quiet low, about -10dBm.  Are the 2 resister R7, R9 nesessary? It seems if I remove them, the output power should increase.

 

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