Just something that needs to be said from time to time…<p>If you are interested in accurate analog to digital converters (which you are, since you went to get a 16 converter instead of the 10 bit ones already included), and there is <i>any</i> possibility that your signal will be changing faster or really anywhere near your sample rate (which is at most 860 samples/second here, remember to include all that nasty digital switching noise polluting your pristine analog signal) then you <i>really</i> want to put a little RC filter on the way from your pristine analog signal to your A/D converter.<p>It's only two components, one takes the place of a wire or a crossover on the circuit board if you are working through hole, so it's really only one extra component.<p>Design of the RC filter is left to the reader and the thousand web pages which will tell you how. Further reading: "aliasing" in the context of signal processing.<p>Once you've leveled up to preventing aliasing, then you can spend a little bit of time thinking about reducing the impedance of your analog signal circuit, let some current flow so the electrical noise doesn't change the voltage so much. But not too much.