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.
Dear sir,
Can you help comment on the differential and common-mode input impedance of INA213BIDCKR?
Thanks for your great support here!
Regards,
Jack
Hi Jack,
Here is a simplified block diagram to illustrate relevant resistors for this topic.
The common mode input impedance looking into either input pin equals to R1+R2; the differential input impedance is effectively Rdiff, a resistor between the two input pins.
The datasheet discusses common mode impedance, its value can be inferred from the slopes of either of these two curves:
The differential impedance was not spelled out in the datasheet, but it is about 2.5KOhm.
Regards, Guang