The MCP4017/8/9 devices are volatile, 7-bit (128 wiper steps) digital potentiometers?with an I2CCompatible interface. This family offers 5kΩ, 10kΩ, 50kΩ?or 100kΩ end-to-end resistance values and is?available in miniature 5?or 6 lead SC-70 packaging with potentiometer or?rheostat pinouts.