ADC and power consumption


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  1. #1
    Join Date
    Jan 2009
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    Default reply / thx

    Was the battery voltage divider in circuit before the ADC command was added and the first measurments taken?
    No, the voltage divider circuit wasn`t there when i measured 42uA


    Leave the code as is and disconnect the divider from the battery and see if that makes a difference.
    It is going back to 42uA


    R5, R9, and R10
    = pulldown resistors for unused pins



    Thank You for your help ...

  2. #2
    Join Date
    Jan 2009
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    78


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    Default what about now ?

    In order to reduce the power consumption it is a good idea to use a common emitter transistor circuit for the voltage divider (as in the attachment) ?

    I will
    Code:
    High PortA.1
    during the ADC reading/conversion

    Best Regards,
    Bogdan
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