12-bit Quad D/A Converter with Non-Volatile EEPROM
Microchip Technology's MCP4728 Digital-to-Analog Converter (DAC) is a 12-bit Quad DAC featuring a non-volatile EEPROM, which enables the DAC's configuration to be loaded automatically on start up. With this capability, plus its four-channel architecture and internal voltage reference, the MCP4728 DAC reduces design size and cost for a variety of battery-powered and power-constrained applications. Non-volatile EEPROM provides designers the flexibility to program MCP4728 DAC input codes, configuration bits and I2C address bits to the EEPROM using I2C serial-interface commands. The result is that this data is held during power-off time, making the MCP4728 DAC's configuration and outputs available immediately after power-up. Additionally, each channel in the MCP4728 DAC can be individually shut down, thereby reducing power consumption to as low as 0.04 microamperes, which helps to extend battery life. Further, the on-chip precision output amplifier enables a rail-to-rail analog output, for utilization of the entire voltage range.