MCP4725 12-Bit Digital-to-Analog Converter I2C DAC

With the MCP4725 breakout board, you can generate analog voltages with your Arduino. This digital to analog converter allows you to create a sine wave, or you can use it for your audio projects to generate tones. The DAC is controlled via the I2C bus and up to two MCP4725s can be operated on an I2C. If the mains voltage is interrupted, the last analog value is stored in the EPROM and restored as soon as the operating voltage is available. The analog value is proportional to the operating voltage of the DAC e.g. at 5V => 0V-5V or at 3V => 0V-3V

An appropriate library can be found in the Arduino IDE when you search for MCP4725.

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Arduino example MCP4725

#include 
#include 
Adafruit_MCP4725 dac;
void setup() {
  dac.begin(0x62);
}
void loop() {
dac.setVoltage(4095, false); //Set voltage to max and do not save in EEPROM e.g 5V
delay(2000);
dac.setVoltage(2047, false); //Set voltage to 2.5V and do not save in EEPROM
delay(2000);
}

Technical details:

• Chip: MCP4725
  
• Default Address: 0x62
• Addresses: 0x62 or 0x62
• Operating voltage: 2.7V to 5.5V
  
• Internal EEPROM for storing settings
  
• Resolution: 12-Bit
  
• Color: Red
  
• Size: 15x15x3mm
  
• Weight: 1g
  

Delivery includes:

• 1x MCP4725 12-Bit Digital Analog Converter I2C DAC
  
• 1x Pin header 6xP