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ADS1018 Single-end configuration

na na78
Guru 16770 points
Other Parts Discussed in Thread: ADS1018

Hi

We are about to use ADS1018 with single-ended input configuration.

ADS1018 has 12bit resolution, however, does it offer 11bit resolution for single-end input?

Bestregards

  • 0
    TI__Guru** 113765 points

    Hi na na 78,

    You are correct.  As the input measurement is differential, you lose one bit in single-ended mode as you are only using 1/2 of the range.

    Best regards,

    Bob B

  • 0
    TI__Intellectual 1610 points

    Hello,


    Thank you for posting in TI E2E forum.

    The resolution of the ADC will always be 12 bits. However, in your case, since you are doing single-ended measurements, you are utilizing only one-half of the entire full-scale range. This is equivalent to reduction in the effective number of bits by 1.

    Giving you an example, in the full-scale range setting (±2.048 V), irrespective of whether you do single-ended or differential measurements, your resolution (or LSB size) for ±2.048 V full-scale range will always be (2*2.048)/(2^12) = 1 mV.

    Let me know if you have any questions.

    Regards,

    Krunal