Digital Potentiometers
A digital potentiometer is a type of variable resistor. Also called a digipot. It is composed entirely of one IC, and is used for adjusting displacement sensors, voltage, current, electronic circuits, etc. In contrast to analog potentiometers that change the resistance value by moving a knob, digital potentiometers are characterized by digital signals, as the name implies. The excellent robustness, setting function, noise level, etc., makes it an economical alternative to analog potentiometers. There are two types: volatile devices that are composed of resistors and resistor arrays and have electronic circuit elements, and non-volatile devices that have built-in EEPROM and OTP memory. Non-volatile devices also have a wiper setting retention feature when the power supply is turned off. There are surface mount types and through hole mount types.