• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 418 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.

AFE4300: The test resistance of the AFE4300 at 500KHz

Robin Zhou
Intellectual 625 points
Part Number: AFE4300


Dear TI experts，

Excuse me, is there any data about the test resistance of the AFE4300 at 500KHz?

It's a multi-frequency body fat test case, and the customer thinks that it’s better at 500khz.

This is the test data here. It seems that the linear characteristic does not exist at 500KHZ.

Looking for your reply.
Thank you very much for your kindy help~

  • 0
    TI__Genius 12575 points
    Hi Robin,

    I could't interpret the data properly as the headings of the data are not in English.
    However I see that the error in impedance estimation is less when the real impedance is more that 200 Ohms. This is expected because RF1 which is used for calibration is of 200Ohms and anything greater than this will have less error. Thus for better results we recommend to choose the calibration impedances such that is covers the range of real impedances to be measured. Foe example, if expected impedance to be measured can vary from 100Ohms to 900 Ohms, then calibration impedance should be 50 Ohms and 1000 Ohms.

    Regards,
    Prabin