AD5721R Output Range vs Supply Voltage

I can't find an "output swing" vs supply voltage spec for the AD5721R, only a list of its selectable output ranges and its max/min supply voltages.

My question is how much if any "overhead" do I need to provide in the analog supplies in order to get a particular output. Say I want ±5V output, I assume I cannot just use a ±5V supply, I need to provide, say, a ±7V supply, right?

Thanks,

Julia

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  • Hi Julia, 

    My question is how much if any "overhead" do I need to provide in the analog supplies in order to get a particular output. Say I want ±5V output, I assume I cannot just use a ±5V supply, I need to provide, say, a ±7V supply, right?

    There is a "headroom" spec with load and range conditions on page 4 of the datasheet. Basing on that, +/- 6V supply should be enough for your +/-5V Output. 

    Best regards,
    Ian

Reply
  • Hi Julia, 

    My question is how much if any "overhead" do I need to provide in the analog supplies in order to get a particular output. Say I want ±5V output, I assume I cannot just use a ±5V supply, I need to provide, say, a ±7V supply, right?

    There is a "headroom" spec with load and range conditions on page 4 of the datasheet. Basing on that, +/- 6V supply should be enough for your +/-5V Output. 

    Best regards,
    Ian

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