ADRV9026 Tx Abnormal Spectrum (filter overflow)

UC13 and UC102 are 16 bit profiles. Have you generated the resource files from the same SW version?

Have you customised the profile ?

Can you check sending 16bit data from FPGA?

Thanks!

I have found the problem according to your suggestion. The octet order in Xilinx 204B IP core is different from 9026 deframer.

And I have another question, what is the actual input range for ADRV9026 DAC? 9026 FAQ said that the DAC resolution is 14bit. Is it means the range of DAC is  -8192~8191? either or  -16384~16383? Because when I used -8192~8191 with 0dB attenuation, the TX output magnitude is -4dBm. It seems that the range can be double to increase 6dB.

jccLiu said:

Is it means the range of DAC is  -8192~8191?

yes, as the DAC resolution is 14 bit.

Please see below post for more details.

 RE: ADRV9026 ADC and DAC resolution 

Thanks!

And how can I increase my Tx output magnitude to the max? I use 14bit-CW wave and set 0dB attenuation, but the output is only -6dBm, As the datasheet said 9026 has the maximum output of 6dBm. Are there any other API settings to increase this 12dB difference? I found that there is another 6dB digital gain in Tx PFIR, should this gain be considered in reaching the maximum output?

Please transmit 16bit data from JESD and check, not 14bit.