I'm puzzling through an idea where I'm not sure what actually happens. Consider a bipolar supply using a two cell battery; Cell A positive terminal is V+, Cell B negative terminal is V-, and the junction between the cells is Gnd. The battery is used to power a circuit that has both analog components (that swing to negative voltages) and digital components (that are strictly positive).
In this configuration, since more power is used at positive voltages, does Cell A drain faster than Cell B? If not, how does the digital circuitry get energy from Cell B?
I've gone back and forth on what my gut tells me, so now I genuinely don't know what to think.