AD5443 DAC buffering

Hello- We plan to use eight AD5443 DACs to produce waveforms. The AD8034 op amp will be used to level shift the output. What is the recommendation in terms of buffering the reference voltage, given that there are 16 loads? Thanks and Best Regards, Tim Starr on behalf of CT@AN

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    •  Analog Employees 
    on Nov 7, 2017 8:07 AM

    Hi Timothy,

    Apologies for the late response. There's no charge injection behavior in MDAC's reference input as there's no sampling capacitor used. Additionally, there would be no load change as the input reference's load is code independent. But the switching artifacts during code changes might be coupled through the reference going to other DACs.

    Cheers,

    Ivan

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  • 0
    •  Analog Employees 
    on Nov 7, 2017 8:07 AM

    Hi Timothy,

    Apologies for the late response. There's no charge injection behavior in MDAC's reference input as there's no sampling capacitor used. Additionally, there would be no load change as the input reference's load is code independent. But the switching artifacts during code changes might be coupled through the reference going to other DACs.

    Cheers,

    Ivan

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