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output voltage noise of VLDO AD5423

Hi

I'm wondering about output voltage noise value from VLDO pin of the AD5423? Can we use it to power a precision ADC and MCU?

Best Regards,

Hussein

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  • Hi,

    I don't have this data atm, would need to dig up old reports to see if we have them. This LDO was intended for logic supply pins only with its low current capability but if the Iq of the other devices are not within the limit. I don't see a reason why it can't be used as a supply. 

    Best regards,

    Ian

  • Hi Ian

    Actually I would like to power low power MCU and AD7747 from the VLDO of the AD5423, is that good enough from noise perspective or do I need to have an external ultra low noise LDO to power the AD7747. The total power that my circuit needs around 20mA.

    Best regards,

    Hussein

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  • Hi Ian

    Actually I would like to power low power MCU and AD7747 from the VLDO of the AD5423, is that good enough from noise perspective or do I need to have an external ultra low noise LDO to power the AD7747. The total power that my circuit needs around 20mA.

    Best regards,

    Hussein

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