jpo Posted September 2, 2016 Share Posted September 2, 2016 Hello, I have a question about the current supply measurement circuit: Why the REF pin of the INA199 is connected to a resistive divider? The REF voltage is obtained dividing the 3.3V with resistors of 6.34K and 100 Ohms. Is it possible to tie REF to GND? Thanks! Link to comment Share on other sites More sharing options...
JColvin Posted September 8, 2016 Share Posted September 8, 2016 Hello, I have asked some of our applications engineers about this to see if they can provide some information about this. Thanks, JColvin Link to comment Share on other sites More sharing options...
jpeyron Posted September 8, 2016 Share Posted September 8, 2016 Hello JPO, If you look at the swing to ground for the INA199A1DCKR you will see the need have it tie to the REF the way it is. cheers, Jon Link to comment Share on other sites More sharing options...
jpo Posted September 9, 2016 Author Share Posted September 9, 2016 Thank you very much for your answer. Regards, jpo Link to comment Share on other sites More sharing options...
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jpo
Hello,
I have a question about the current supply measurement circuit: Why the REF pin of the INA199 is connected to a resistive divider?
The REF voltage is obtained dividing the 3.3V with resistors of 6.34K and 100 Ohms. Is it possible to tie REF to GND?
Thanks!
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