SLIS136C September 2011 – September 2019 TPL0501-100
The digital potentiometer generates a voltage divider when all three terminals are used. The voltage divider at wiper-to-H and wiper-to-L is proportional to the input voltage at H to L (see Figure 12).
For example, connecting terminal H to 5 V and terminal L to ground, the output voltage at terminal W can range from 0 V to 5 V (see Equation 1).
The voltage difference between terminal H and terminal W can also be calculated in Equation 2.