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  • TI Thinks Resolved

DAC5687: Interleave mode

Genius 10235 points

Replies: 5

Views: 79

Part Number: DAC5687

Hello,

I think Interleave mode is to input A and B data one after the other but fdata speed is double of A or B data. I think this is written in figure 50.

DAC5687 interpolation is x2 tp x8. In Figure 49, DAC clock is 2x to 16x. I guess 16x means 2xfdata with x8 interporlation, I guess 2x means 2xfdata without interpolation.

I am confused about Figure 49. Clocking before interpolation is written FDATA. After x2 interpolation, 2FDATA is written. x2 interporation can be bypassed. I am not clear 2FDATA is after Interpolation or not.

I thought Interleave mode is to work below but I am getting to think DAC5687 may work differently.

DAC5687_interleave.pptx

Would you let us know what is the right interleave mode operation?

Best regards,

Toshihiro Watanabe

  • Hi Toshihiro-san,

    We are looking into your question, and will be back with you soon.

    Best Regards,

    Dan

  • In reply to dBrock:

    Hello Dan-san,

    Do you have any update?

    Best regards,

    Toshihiro Watanabe

  • In reply to Toshihiro Watanabe:

    Hello Dan-san,

    Do you have any update?

    Best regards,

    Toshihiro Watanabe

  • In reply to Toshihiro Watanabe:

    Hello,

    Any update?

    Best regards,

    Toshihiro Watanabe

  • Hi Toshihiro-san,

    The block diagram you attached is correct. Data is latched into DA bus at 2Fdata rate because Channel A and Channel B data is multiplied so the effective data rate is after the Demux is Fdata and after FIR1( interpolation by 2) data rate is 2Fdata.

    Regards,

    Neeraj

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