The MCP4725 is a 12-channel buffered voltage output DAC with non-volatile memory (EEPROM) of. The user can configure the register bit (2) and DAC input data (12) stored in nonvolatile EEPROM (14-bit) memory. By setting the configuration register bits DAC can be configured as a normal mode or power-saving shutdown mode. The device uses a two-wire I2C-compatible serial interface, and a voltage range of 2.7V to 5.5V single supply. Description: You've always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC) A DAC allows you to!. send analog signal, such as a sine wave, from a digital source, such as the I2C interface on the microcontroller. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!