So I've been looking at magnetic sensor datasheets and I see the sensitivity is usually listed in units of mV/V/gauss. What does this mean? Let's say I need to sense changes in a magnetic field that usually ranges from about 10 gauss ( 1 mT ) to about 130 gauss ( 13 mT ). And I need to be able to sense 0.12 gauss ( 12 μT ) differnces in the field ( basically the range divided into 1000 equal parts ). How would I calculate the sensitivity range that would be sufficient for such an application?