What is the Maximum reference voltage for ADC0804

Discussion in 'Homework Help' started by isurunix, May 9, 2015.

  1. isurunix

    Thread Starter New Member

    Feb 3, 2015
    21
    0
    How can I find the maximum reference voltage that is possible to be supplied at the pin 9 of ADC0804 ?
    I referd the data-sheet and it doesn’t s specify such a thing.
    Can some one point me in the correct direction?
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
    Hello,

    Did you read the following section in the datasheet:

    ADC0804_Vref.png

    Bertus
     
  3. isurunix

    Thread Starter New Member

    Feb 3, 2015
    21
    0
    @bertus Thank you for pointing out.
    So from what I understood the maximum voltage I can use for Vref is VCC.
    And according to the data-sheet maximum VCC is 5V - 6.5V.
    So my maximum Vref depends on that.
    Is that so?
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
    Hello,

    The Vref can never be higher as the Vcc.
    As you can see in the diagram, the Vref is connected to the Vcc with a resistor.
    The Vref will be as stable as the applied Vcc.

    Bertus
     
Loading...