I am using AD9139 for the transmitter, the evaluation board uses two buluns, why use two balun? What's the effect of using only one? Thanks！
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The AD9139 is a 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a maximum update rate of 1600 MSPS, permitting multicarrier...
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Hi Draogn ,
The two baluns in the DAC output data paths are for converting the differential output to single ended while suppressing the noise coming from the feedline (the 1:1 balun acts as an isolator). If using only one balun (i.e. the 1:2 balun only), SNR may not be optimal due to noise.