How to calculate accuracy achieveable ADS1247

Discussion in 'General Electronics Chat' started by aamirali, Jun 12, 2014.

  1. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    I am using ADS1247 to measure voltage as listed in attached file.

    Minimum voltage to measure = 59067uV

    Maximum voltage to measure = 979671uV

    AVDD = DVDD = 3.3V

    IDAC = 50uA

    PGA = 2

    Internal refer = 2.048V

    1. Will I achieve to measure voltage as I need?

    2. How to calculate accuracy which can be achieved by ADS1247 with above parameters?



    Crosspost:
    http://e2e.ti.com/support/data_converters/precision_data_converters/f/73/t/347733.aspx
     
  2. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    Measureing a total range of 60mV to 100mV, using a ADC with Vref of 2.048v, just sounds nuts to me! :eek:

    Why aren't you amplifying the signal before sampling with the ADC?
     
  3. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    Hi,

    range is 60mV to 1V. (please check again)
    I have a PGA of 2 that why's ref is 2.048.
     
    THE_RB likes this.
  4. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    any help on dat??????
     
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