I hope you did not tried it yet!
In that case, think to put this resistor on the ground terminal and not on the + line.
After this an op-amp I think is necessary to amplify the signal by a factor of X to raise the voltage from the resistor (a few mV) up to the max level the ADC will need.
A good op-amp might be the LMC66x series from National or the Microchip's low voltage op-amps (not tried them yet).
Ioannis
Bookmarks