I am using an instrumentation amp (http://www.linear.com/product/LT1168), and I am a bit confused why it is giving me a output voltage that I am not expecting.
I am pretty sure, I am doing something dumb here.
The way I have it hooked up now is as follows:
I am expecting a 5V difference between the reference and the OUT pin, but I am only getting 3.9. What am I doing wrong here? I know the output will not go to the ramp voltage, but 3.9 seems too little.
There must be something I am missing. Datasheet: here