So far I've figured out ( I think) that the # steps on the output of and ADC is based on the full scale voltage divided by the #bits (resolution) of the ADC. For example, a 4 bit adc with a 5 V full scale input will have steps in 5/16 (or 0.3125V) increments.
Question is: What does an external Voltage Reference do for the ADC ?
And does it play in the calculation above at all ?
Hope this is clear.
Any insight is appreciated.
Question is: What does an external Voltage Reference do for the ADC ?
And does it play in the calculation above at all ?
Hope this is clear.
Any insight is appreciated.