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ADR5045 Voltage bias for a voltage divider

Question asked by Morphin on Oct 15, 2014
Latest reply on Oct 16, 2014 by LucaV

Hi

I would like to measure the voltage with a voltage divider.

I would like to bias (offset, subtract) 5V with the ADR5045BKSZ-REEL7  from a 6-16V Voltage Source.

 

My current scheme is this:

 

VoltageDivider.png

I have calcuted that the Total current should be betwwen 75uA (6V Input) and  820uA (16v) Input. Max Voltage Output is about 3.5V, Minimum about 0.3V. (Spannungsteiler, belastet)

 

 

I have seen on another post that somebody made a similar circuit with a TL431 variable shunt regulator:

FrSkyDivider.gif

 

Do you agree that my solution should working?

 

Thank's very much for every input

Andy

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