Mixed-Signal Front Ends (MxFE)

Q&A DPD Support for AD9988

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DPD Support for AD9988

hidehiko@idaqs.jp 3 months ago

Dear ADI Support,

We created 100MHz B/W 5G signal and transmit it from DAC.

The direct signal from DAC seems to be good on spectrum analyzer.

However, a signal via PA is not good. It is not sufficient with ACP.

So, we want to use DPD(Digital Pre Distortion) function on AD9988.

Does AD9988 support a DPD?

Do you have any documentation that describe how to design DPD on AD9988?

Regards,

Tobe

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UmeshJ
Oct 31, 2021 +1 verified
the AD9988 does not have any built-in DPD engine like the ADRV9029. In this case, the DPD will have to be programmed into the logic device (ASIC/FPGA) that is sending the data to the DACs.

+1 UmeshJ

on Oct 31, 2021 1:21 PM
the AD9988 does not have any built-in DPD engine like the ADRV9029. In this case, the DPD will have to be programmed into the logic device (ASIC/FPGA) that is sending the data to the DACs.
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0 hidehiko@idaqs.jp on Nov 2, 2021 9:45 AM in reply to UmeshJ

Hi UmeshJ san,

Thank you for your answer.

We try to find other solution to improve ACP.
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