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Visitor II
February 14, 2025
Solved

STM32H563 maximum current consumption of AD converter(RUN mode)

  • February 14, 2025
  • 1 reply
  • 542 views

I searched about STM32H563 maximum current consumption of AD converter when run mode on datasheet and reference manual.

I could't find AD converter's maximum current consumpsion on datasheet and reference manual.

I want to consider external LDO for VDDA by AD converter's maximum current consumption.

Please advise for me.

    This topic has been closed for replies.
    Best answer by AScha.3

    see ds :

    AScha3_0-1739519718082.png

    Any LDO will have more than 1mA output...even the smallest have 50mA or more max. output current.

     

    >I want to consider external LDO for VDDA

    Why ? ultra low noise LDO ? H563 has 12b ADC , so not much to gain , if VDD has LDO anyway.

    1 reply

    AScha.3Answer
    Super User
    February 14, 2025

    see ds :

    AScha3_0-1739519718082.png

    Any LDO will have more than 1mA output...even the smallest have 50mA or more max. output current.

     

    >I want to consider external LDO for VDDA

    Why ? ultra low noise LDO ? H563 has 12b ADC , so not much to gain , if VDD has LDO anyway.

    tomyAuthor
    Visitor II
    February 14, 2025

    Thank you for your advice.

    I was searching on keyword "current consumption".

    VDD need many current by logic circuit around H563,
    so, generate from switching regulator circuit.

    therefore, I considering LDO for VDDA.