On chip EEPROM restores configuration data at power up

This, says Microchip, enables the DAC's configuration to be loaded automatically during power up. The onboard EEPROM, coupled with an internal voltage reference, four channel architecture and rail to rail precision output amplifier, enables the MCP4728 DAC to reduce the size in a variety of battery powered and power constrained applications. The integrated I²C serial interface has been designed to allow users to configure the DAC's input codes, configuration bits and I²C address bits. This configuration information is stored in the non volatile EEPROM and retained after power is removed. According to Microchip, this makes it available immediately after power is reapplied and reconfiguring the DAC during power up. The architecture of the MCP4728 has been designed to allow each of the four channels to be individually shut down, which Microchip says can reduce power consumption to 40nA. Suitable for consumer, medical, industrial and automotive applications, the DAC is sampling now and available in a 10pin msop package.