Adafruit MCP4728 Quad DAC with EEPROM - STEMMA QT/Qwiic
Adafruit MCP4728 Quad DAC with EEPROM - STEMMA QT/Qwiic
If you ever say to yourself, "Gee, I wish I had four 12-bit DACs built in came in a single package, with the ability to save their settings to an EEPROM", so I have good news. The MCP4728 is the answer to your wishes! Within its small package, the MCP4728 features four 12-bit DACs for all voltage settings. Additionally, it has the ability to save the settings for the DACs on an internal EEPROM. Once stored in internal non-volatile memory, the settings are loaded by default when the DAC is turned on. I2C! To take things even further, the MCP4728 allows you to choose between two sources for your reference voltage: the input voltage you use to power it to the VCC pin, or an internal 2.048V reference voltage. When using the internal reference voltage (Vref in DAC Speak), you can choose between 1x or 2x gain for the output, so your voltages range from 0V to 2.048 or 0V to 4.096V as your application requires. By default you use the input voltage as Vref, so you can scale the voltages from 0V - 3.3V or 5V depending on the input voltage. Or use the 2.048V Vref for ~3.3V usage, and the 4.096Vref for ~5V usage. The breakout for the MCP4728 is equipped with the necessary support circuitry to use with your microcontroller of choice or a Blinka supported computer. The SparkFun Qwiic compatible STEMMA QT JST SH connectors ease the process of connecting the MCP4728 to your project and allow you to share an I2C bus with other STEMMA QT, Qwiic, Grove or other compatible sensors.
Product Features
- The MCP4728 has four 12-bit DACs for all the voltage settings you need