• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 453 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.

ISO224: Transfer function

Zoe Ko
Expert 3870 points
Part Number: ISO224


Hi team,

For the ISO224 transfer function is shown in the datasheet figure. 5.

That's Vout diff= Vin/3 but may I know some voltage value for VOUTP and VOUTN when such as Vout diff= 2V and 4V in figure 5?

Thank you!

  • 0
    TI__Guru 64275 points

    Hello Zoe,

    Figure 5 shows the transfer function (Vout vs. Vin) for the ISO224.  Both VoutP and VoutN are shown individually in Figure 5 and the differential output (VoutP-VoutN) is equal to Vin/3. 

    Here's an example:  When Vin = +12V, VoutP is equal to 4.5V and VoutN is equal to 0.5V.  This yields a differential output voltage of (4.5V - 0.5V) = 4V which is +12V / 3 as you'd expect based on the transfer function. 

    The calculations for the individual output voltages are:

    VoutP = Vin/6 + 2.5V 

    VoutN = +2.5V - Vin/6

    With Vin = +12V you'll get the 4.5V for VoutP and 0.5V for VoutN which yields the expected differential voltage of 4V.