The MCP4017T-104E/LT is a 7-bit Single I2C? Digital Potentiometer with volatile memory. The VDD pin is the device's positive power supply input. The input power supply is relative to VSS and can range from 1.8 to 5.5V. A de-coupling capacitor on VDD (to VSS) is recommended to achieve maximum performance. While the device's voltage is in the range of 1.8V <= VDD < 2.7V. It is intended to be used in applications where a programmable resistance with moderate bandwidth is desired.