The MCP4728 from Microchip is a digital-to-analog converter (DAC), claimed to be the industry’s first 12-bit quad DAC to include non-volatile EEPROM, enabling the DAC’s configuration to be loaded automatically during power-up.
The on-board EEPROM, coupled with an internal voltage reference, four-channel architecture and rail-to-rail precision output amplifier, enables the device to reduce the size and component cost in a variety of batterypowered and power-constrained applications.
Through the integrated I²C serial interface, designers can configure the MCP4728’s input codes, configuration bits and I²C address bits. This configuration information is stored in the non-volatile EEPROM and therefore retained after power is removed, making it available immediately after power is reapplied and reconfiguring the DAC during power-up. The architecture of the IC also allows each of the four channels to be individually shut down, thereby reducing power consumption to as low as 40 nA.
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