• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 49 subscribers
  • Views 244 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

INA206: Resistor values and precision tolerance

FRANK1
Expert 7855 points
Part Number: INA206

Hi sir,

I want to use INA206 in my new design.

I can find 4 resistors in internal block diagram.

8.2 Functional Block Diagram

https://www.ti.com/lit/ds/symlink/ina206.pdf

Can you tell me each resistor value and each resistor's precision(tolerance)?

Thank u in advance..

Regards,

  • 0
    Guru 140200 points

    Hi Mark,

    the input and output impedance of pin 3 and pin 6 is given in the datasheet: 10k typical. So, I think each resistor should have 20k typical.

    Due to manufacturing tolerances of die fabrication the absolute tolerance can widely differ from chip to chip. About +/-20...30% is realistic. But the match of these resistors is very much better.

    Kai

  • 0 in reply to kai klaas69
    TI__Mastermind 23585 points

    Hello Mark,

    Thanks for reaching out on the forum.  What Kai says is correct.  Figure 33 of the datasheet shows that one leg of the each voltage divider is 20k and if the comparator in voltage is 0.6V, by default the other leg of the divider must also be 20k.  As for a tolerance of +/-20 to 30%, that is usually what is for our resistors that set the gain of our devices. Most likely the same trim process used for those resistors is also use for these divider resistors.  The trim process focuses on the ratio and not any resistor having a specific resistance. What are you trying to do that requires knowing what these resistor values are?