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AD9102: Hold last pattern sample after pattern period executed

Thread Summary

The user is trying to configure the AD9102 to hold the last sample of a waveform stored in SRAM after a single pattern execution. The final answer confirms that the AD9102 does not support this feature automatically. To achieve the desired behavior, the user can add a long flat tail at the end of the SRAM pattern or manually switch the device to DAC-constant output after the pattern completes.
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Category: Datasheet/Specs
Product Number: AD9102

Hello,

We are evaluating the AD9102 using development board AD9102-ARDZ-EBZ and associated controller board EVAL-SDP-CK1Z. We have successfully used the ACE software to generate an SRAM-stored waveform with the desired shape; however, we have been unable to configure the AD9102 to hold the last sample of the pattern.

Our question is nearly identical to this existing question, but no public answer has been provided:

"We are storing a waveform in SRAM and we are executing a single pattern period. We would like the output to stay and hold the last value in the pattern. (the value written in SRAM at address STOP_ADDR)."

If it is possible to achieve this behaviour, please do let us know, as it is very important to our usecase.

Kind regards,


DB

Parents
  • Hi  ,

    Apologies for the delay.

    The AD9102 does not support automatically holding the final SRAM sample after a single pattern execution.

    To approximate this behavior, you can:

    • Add a long flat tail at the end of your SRAM pattern, or
    • Manually switch the device to DAC‑constant output after the pattern completes.

    Thanks and kind regards,

    Alex

Reply
  • Hi  ,

    Apologies for the delay.

    The AD9102 does not support automatically holding the final SRAM sample after a single pattern execution.

    To approximate this behavior, you can:

    • Add a long flat tail at the end of your SRAM pattern, or
    • Manually switch the device to DAC‑constant output after the pattern completes.

    Thanks and kind regards,

    Alex

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