3 ms·
Usually you have a reference voltage for the ADC, that is the maximum you can measure. A 1V band gap voltage reference is common. You could also use 3.3V Vcc
by pantalaimon 3y ago
Usually you have a reference voltage for the ADC, that is the maximum you can measure.
A 1V band gap voltage reference is common.
You could also use 3.3V Vcc instead, but there is no guarantee that that’s actually 3.3V as it's provided by an external circuit.
The band gap voltage is always 1V, so I see why it would be the default.