ANALOG DEVICES AD5207 handbook

The AD5207 is a dual channel, 256-position digital potentiometer that can replace mechanical potentiometers. It is available in 10kΩ, 50kΩ, and 100kΩ resistance values, and supports 2.7V to 5.5V single supply or -2.7V dual supply. It can be controlled via a 3-wire SPI compatible serial data input, and is automatically set to the midscale position during power-up.