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Moamen Ayman
Moamen Ayman
Associate III
December 9, 2016
Solved

ADC circuit

  • December 9, 2016
  • 1 reply
  • 642 views
Posted on December 09, 2016 at 20:51

Hello, 

I am working on a design on stm32f407vgt6 which I don't want to use the ADC & DAC so I don't have to connect the circuit of ADC and leave VDDA&VSSA&VREF floating?

#clive1
    This topic has been closed for replies.
    Best answer by Lawliet KG
    Posted on December 13, 2016 at 12:04

    Hi

    Ayman.Moamen

    ,

    In the datasheet of the

    stm32f407xx device, section 'Power supply scheme', it's indicated that VSSA and VDDA pins

    MUST

    be

    respectively

    connected to VSS and VDD in order to correctly power on the device; Otherwise, you will be out of specification.

    For the VREF pin, it SHOULD be connected.

    -> So, whether you will be using DAC/ADC peripherals or not, I advice you to correctly connect those pins as indicated on the datasheet.

    If this answers your request, please press 'correct'

    :)

    .

    Regards,

    Lawliet.

    1 reply

    Lawliet KG
    Lawliet KGBest answer
    Visitor II
    December 13, 2016
    Posted on December 13, 2016 at 12:04

    Hi

    Ayman.Moamen

    ,

    In the datasheet of the

    stm32f407xx device, section 'Power supply scheme', it's indicated that VSSA and VDDA pins

    MUST

    be

    respectively

    connected to VSS and VDD in order to correctly power on the device; Otherwise, you will be out of specification.

    For the VREF pin, it SHOULD be connected.

    -> So, whether you will be using DAC/ADC peripherals or not, I advice you to correctly connect those pins as indicated on the datasheet.

    If this answers your request, please press 'correct'

    :)

    .

    Regards,

    Lawliet.

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