A new guide in the Adafruit Learning System: Adafruit MCP4728 I2C Quad DAC by Bryan Siepert and Isaac Wellish.
If you’ve ever said to yourself “Gee, I wish these four 12-bit DACs came in a single package with the ability to save their settings to an EEPROM”, well I have good news. The MCP4728 is the answer to your wishes! Within its little package, the MCP4728 has four 12-bit DACs for whatever voltage setting needs you may have. In addition, it has the ability to store the settings for the DACs to an internal EEPROM. Once saved to the internal non-volatile memory, the settings will be loaded by default when the DAC powers up.
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