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M
mat
Visitor II
August 7, 2009
Question

ADC External Voltage Reference - ST6232

  • August 7, 2009
  • 4 replies
  • 978 views
Posted on August 07, 2009 at 12:08

ADC External Voltage Reference - ST6232

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    4 replies

    M
    matAuthor
    Visitor II
    May 11, 2004
    Posted on May 11, 2004 at 09:58

    The ST6232 datasheet refers to a separate ''power supply'' for the ADC to be appplied on pins AVdd and AVss. Is this actually the PSU or the ADC reference voltage (as I think it is). Is the Power supply for the ADC actually derrived from Vdd and Vss of the MCU.

    I'm planning to power the MCU from 5Vdc with a 2.5V precision reference to AVdd and AVss ............ will this work

    S
    simonharrison9
    Visitor II
    June 10, 2004
    Posted on June 10, 2004 at 09:12

    Hi,

    The pin is for ADC power supply decoupling only.

    It is internally connected to the supply rail.

    This is detailled in the datasheet

    DO NOT connect a different supply, as you can imagine, bad things will happen!!

    hope this helps

    Simon
    M
    matAuthor
    Visitor II
    June 11, 2004
    Posted on June 11, 2004 at 07:14

    The Data sheet says this:

    ''AV DD and AV SS . Power is supplied to the MCUA/D converter independently from the rest of the chip using these two pins.''

    I'm really confused ??
    G
    gfrancia9
    Visitor II
    August 7, 2009
    Posted on August 07, 2009 at 12:08

    I am looking for ST62E32BF1 or ST62T32BB6

    could help me?

    you have some piece?

    where can I buy them?

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