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DAC3482: Phase noise problem

Part Number: DAC3482
Other Parts Discussed in Thread: DAC34SH84,

We use high speed DAC chips in some of the listed products, specifically DAC34SH84, DAC3482, and in the process of testing, it is found that there is a drum package near the IQ signal of DAC.

Therefore, the DAC self performance is verified by the DAC self test number, and the Q data is connected to the spectrum meter through 2:1 Baron from DAC, and the phase noise characteristics of the intermediate frequency signal are measured, and there is a convex situation around the remote detection of 2M).

DAC3482 test result 

DAC34SH84  test result