• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 487 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

INA240-Q1: What does "Reference divider accuracy" mean?

Yoshiki Ochi
Genius 9685 points
Part Number: INA240-Q1


Hi team, 

What does "Reference divider accuracy" mean? 

Datasheet says "Reference divider accuracy max = 0.1% @ VS = 5 V, VSENSE = VIN+ – VIN– , VCM = 12 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted), TA = – 40°C to 150°C".
Does it mean reference voltage range is 2.5V ± 0.1% in above test condition?
In addition, do you expect reference voltage range will be also 2.5V ± 0.1% @ VS=VREF1=5V, VREF2=0V? / TA = – 40°C to 150°C?

Regards,
Ochi

  • 0
    TI__Mastermind 27190 points

    Hello Ochi-san,

    In that first condition the reference will be 2.5V since there is no voltage dividing happening because the ref pins are the same. So it will be the exact voltage placed on the VREF pins.

    For the second test condition, the reference will be 2.5V ± 0.1%. The error for the reference divider will always be a max error of ± 0.1% of the effective reference.