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ADS42JB69: Trace Length for JESD204b

Prodigy 110 points

Replies: 1

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Part Number: ADS42JB69

Is there a minimum trace length recommended for the JSD204b for the ADS42JB69? I need to use Megtron 6 with this board.

The data speed for this ADC is listed at 3Gbps or 2.5 Mbps depending on the mode I am in.

Thanks.

  • Guru 54040 points

    4786.High Speed Serial Link Layout Recommendations.pptxDaniel,

    There is no minimum trace length recommend when using Megtron 6. But, if your traces are pretty short, say 5 inches or less, you may be able to get by with standard FR4 (370HR), which is much cheaper. Take a look at the attached document for more info. Before you make your final decision on which material to use, it is always a good idea to simulate the layout if possible. The current TI ADS42JB69EVM only uses 370HR material with no issues. The design package can be downloaded from the ADS42JB69EVM product folder on the TI website. 

    Regards,

    Jim

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