Frequently Asked Question
For digital potentiometers that do not have nonvolatile memory, what is the state during power up?
Most of our digital potentiometers contain P.O.R. (power on preset) circuitry which presets the wiper-to-terminal resistance to the middle value of the terminal-to-terminal resistance. For example, If RAB = 10 kΩ, then at power-up RWB = RWA = 5 kΩ. For the digital potentiometers that do not have this feature, the wiper-to-terminal resistance can be anything at power-up. Please check the datasheets for more details.