MCP4725 I2C 12bit DAC Breakout Development Board

Description

The MCP4725 is a 12-bit Digital-to-Analog Converter (DAC) that provides a true analog voltage output controlled via I2C, making it a great choice for generating audio signals or adjustable voltage references .

Here are the key specifications for the MCP4725 I2C DAC Breakout Board:

Key Specifications

Note: The default I2C address can vary between manufacturers. The most common default address is 0x62, but some vendors like M5Stack use 0x60 . You’ll want to verify the address for your specific board.

Key Features

• Precision Analog Output: The 12-bit resolution provides 4,096 discrete voltage levels, allowing for a precise and smooth analog signal .

• EEPROM Memory: It has internal EEPROM, which can store the last written DAC value. On power-up, the chip automatically restores this value and sets the output accordingly .

• Configurable I2C Address: The A0 pin allows you to change the I2C address, enabling you to connect two MCP4725 breakouts to the same I2C bus .

• Small and Breadboard-Friendly: The breakout board is compact and comes with pins that can be soldered for use in a breadboard or for direct wiring .

• Rail-to-Rail Output: The output voltage can swing from 0V all the way to its supply voltage .

Common Applications

• Generating analog waveforms (sine, triangle, square waves) 

• Creating an adjustable bias point or voltage reference 

• Sound generation and audio signal simulation 

• Controlling actuators or any device that requires a smooth analog control signal 

• Calibration of systems where a specific voltage needs to be set and maintained 

A Note on Voltage

The MCP4725 output voltage is rail-to-rail and proportional to the supply voltage (VDD) . If you power the board with 3.3V, the maximum output voltage will be 3.3V. If you power it with 5V, the output can reach 5V.