DAC Module

The Power DAC Module is a bi-phasic, digital-to-analog converter for any 3.3V or 5V microcontroller


Much like our Power DAC shield, the Power DAC Module is a digital-to-analog converter with 12bit resolution that can generate true AC waveforms. But, the Module version has been redesigned to work with both 3.3V and 5V microcontrollers. You can now take advantage of faster low-voltage micro-controllers, such as the ARM Cortex series, to truly unlock its potential! This module is smaller, uses all SMD parts, and has an output op-amp offering better rail-to-rail performance than the shield version. It also features mounting holes for long-term installation in projects.


  • DAC IC: MCP4921
  • Input V+
    • Max: 12V
    • Min: 3.3V
  • Input V-
    • Max: -12V
    • Min: -3.3V
  • Output Vpp
    • Max: 24V
    • Min: 0V
  • Output current protection
    • Trip - 0.250 A
    • Hold - 0.100 A
  • Logic is compatible with 5V and 3.3V microcontrollers and dev boards including Arduino, Teensy, Launchpad, ARM and MSP430 dev boards.
  • Output voltage is sourced from an external supply (see connection diagram and V+ and V- specs above)

Use Cases

  • Audio output
  • Driving small DC motors
  • Driving big DC motors with an external power amp
  • Drawing Lissajous figures and other shapes on oscilloscopes
  • Anything requiring precise, true analog voltage output
  • Laster galvo drivers

Source Files available on GitHub Schematic

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