AD9142A - power consumption per power pins?

Hello,

I would like to ask about AD9142A. I cannot find anywhere in its datasheet the power consumption per power rail. I found that information for power-down mode but not for normal-mode. Can you please provide me with this information? Thank you.

Regards, Jan.

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    •  Analog Employees 
    on Mar 8, 2018 9:22 PM

    There are some typical performance plots of the power consumption per rail based on the FDAC frequency (which has an impact on many of the rails) that you can find in Figure 25 - 27 in the Rev A datasheet.

  • Would you mind explaining how one might combine the data from these three charts to determine the power requirement for each rail based on a particular use case.  Figure 25 states that it is the baseline.  How do we combine the information contained in Figure2 25 and 26.  Do we add the currents from Figure 26 to the baseline from Figure25 based on the Digital Functions we are using?  Or do we subtract the amount from the baseline for digital functions we are not using?  I have searched the datasheet and was not able to find an explanation as to how to accurately predict the current of DVDD18 based on a combination of rate, interpolation, and required digital functions.

    Regarding the power consumption specifications provided in Table1 on pages 6 and 7 of the datasheet, what digital functions were enabled/disabled during these tests?

    Thanks!

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  • Would you mind explaining how one might combine the data from these three charts to determine the power requirement for each rail based on a particular use case.  Figure 25 states that it is the baseline.  How do we combine the information contained in Figure2 25 and 26.  Do we add the currents from Figure 26 to the baseline from Figure25 based on the Digital Functions we are using?  Or do we subtract the amount from the baseline for digital functions we are not using?  I have searched the datasheet and was not able to find an explanation as to how to accurately predict the current of DVDD18 based on a combination of rate, interpolation, and required digital functions.

    Regarding the power consumption specifications provided in Table1 on pages 6 and 7 of the datasheet, what digital functions were enabled/disabled during these tests?

    Thanks!

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