?The MCP4725 is a single-channel 12-bit buffered voltage output DAC with non-volatile memory (EEPROM) that allows you to store configuration register bits (2 bits) and DAC input data (12 bits) to non-volatile EEPROM (14-bit) In memory. The DAC can be configured for normal mode or power-saving shutdown mode by setting the configuration register bits. ?I2C communication interface with Standard, Fast, and High-Speed supported.12-bit resolution support support internal EEPROM to store settings. ?2-bit resolution,Working Voltage: 2.7-5.5V, ?The DAC allows you to send analog signals, such as sine waves, from a digital source such as the I2C interface on an Ard-uino microcontroller. Digital to analog converters are ideal for sound generation, musical instruments and many other creative projects. ?Working Voltage: 2.7-5.5V.