If an analog temperature sensor is used with an 8 bit ADC (analog to digital converter)...
If an analog temperature sensor is used with an 8 bit ADC (analog to digital converter) and a 5 volt power source, what is the smallest temperature increment you could measure? That is, what is the resolution here?
Homework Answers
The smallest tempreture increment is given by resolution of a ADC
total number of bits used here = 8 bits
power supply = 5Volts
total number of steps= 28 - 1= 256-1=255
step size = resoution of ADC= (power voltage)/(total nomber of steps)
resolution= 5 volts/255= 0.01960Volts= 19.60 mV
smallest tempreture increment corresponding to 19.60mV is the smallest tempreture that can be measured.
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