We are seeing ghosting on our ADV7441A design, can you give us some idea as to what would cause this? Images attached.
ADV7441A is not recommended for new designs and very limited support will be available for this.
Please visit ADV7441A Design Support Files for documents and scripts related to this eval board.
Whether customer is using the scripts available in design support files?
I believe that the below threads are helpful for you to refer
hi，can you tell me your email or telephone？I want to discuss some questions about ad9144. Thank you！
This community is for the discussion of Analog Devices products that relate to video applications.So could you please post this question on https://ez.analog.com/community/data_converters/high-speed_dacs community?I believe that this is the right community since I could see this part related questions there.
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Technical Support | Analog Devices
1) What format are you seeing the images in?
2) Is this from the analog input or the HDMI input?
In general there are several potential source of ghosting.
1) In the analog domain: There can be impedance mis-matches on the analog signal trace causing ringing and reflections. These show up as ghosting in horizontal lines. Often these ghost show up on vertical edges several pixels after the true edge location. I don't see any of this in the images provided
2) In the digital domain: It's possible you can create strange image artifacts due to format conversion and filtering.
3) The third source could be that the monitor is generating artifacts. This is usually caused by displaying images that are not in the native format of the display. If I try to display a NTSC image on a monitor which has 1080p glass, the monitor will upscale the image introducing it's own set of artifacts.
I am having a very hard time seeing exactly what the artifact is from the attached images. Keep in mind that jpg is a compressed format which introduces another whole set of potential artifacts so they are really not the best file formats to use when you're trying to look at close details. Bmp is non-compressed and the best to compare with.
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