A rotary potentiometer is to be used as a remote rotational displacement sensor. The maximum displacement to be measured is 180?, and the potentiometer is rated for 10 V and 270? of rotation.
a. What voltage increment must be resolved by an ADC to resolve an angular displacement of 0.5?? How many bits would be required in the ADC for full-range detection?
b. The ADC requires a 10-V input voltage for full-scale binary output. If an amplifier is placed between the potentiometer and the ADC, what amplifier gain should be used to take advantage of the full range of the ADC?