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AD9789 flatness issue

Jacky.Lu 在 2014-6-2 詢問的問題
最後回覆由ADI_Wei於2014-6-25提供

Hi,

請問有AD9789 flatness 相關的技術文件嗎??

 

We need the documents about AD9789 register setting and recomended value

for the consistent output level (flatness) and MER of VHF and UHF band (50MHz ~ 860MHz).

 

We have three types of RF output, DVB-T / DVB-C J83A / DVB-C J83B and

output single carrier and 4 adjacent carriers.

 

We would like to get the same RF output level and MER, no matter low frequency and high frequency channel.

So far we can't get the same output level and MER when we set the same register value for channel gain, in-scale and sum-scale

to different channel frequency.

As we know, we can control channel gain, in-scale and sum-scale value, please recommend us what value we should set for different application.

And except above three parameters, what else register we should take care for flatness and MER consistently.

 

Thank you very much

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