MCP4725 12-Bit DAC Module — I2C, Arduino Analog Output

MCP4725 12-Bit DAC Module — I2C, Arduino Analog Output

The MCP4725 DAC module adds a true 12-bit analog output to any Arduino via I2C. Unlike Arduino's PWM outputs, the MCP4725 produces a genuine DC analog voltage from 0V to VCC with 4096 steps — ideal for audio waveform generation, precision voltage references, and analog control signals. Includes on-chip EEPROM to retain the last output value after power-off.

Key Specifications

• IC: MCP4725 | Resolution: 12-bit (4096 steps)
• Output range: 0V to VCC | Interface: I2C (0x60 / 0x61)
• Settling time: 6μs | EEPROM: Yes (retains last value)
• Supply voltage: 2.7–5.5V | Current: 0.4mA
• Compliance: RoHS compliant

Why Choose This?

• ✅ True analog output — genuine DC voltage, not PWM approximation
• ✅ 12-bit resolution — 4096 steps for smooth, precise analog control
• ✅ EEPROM — retains output value after power-off
• ✅ Adafruit MCP4725 library — simple Arduino integration

Typical Applications

• Arduino true analog output for audio waveforms
• Precision voltage reference generation
• Analog control signal for VCO and VCA circuits
• Motor speed control via analog voltage

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