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AD9375 DDS Scale to dbm

Category: Hardware

I am working on AD9375 interfaced with Xilinx Ultrascale + FPGA. 

While working with DDS scale, I found this in Driver Code and the scale is in micro units (i.e. 1*1000*1000 is 1.0)

axi_dac_dds_set_scale(dac, ((i*2)+0), 50*1000);
axi_dac_dds_set_scale(dac, ((i*2)+1), 50*1000);

How can i relative this with dBm? (micro units to dBm)