Adafruit
Adafruit DAC6578 Breakout - 8 x Channel 10-bit I2C DAC
· MPN: ADA6258
The Adafruit DAC6578 Breakout provides eight independent 10-bit digital-to-analogue converters in a single package, all controllable over I2C. Set precise ou...
The Adafruit DAC6578 Breakout provides eight independent 10-bit digital-to-analogue converters in a single package, all controllable over I2C. Set precise output voltages on up to eight channels simultaneously, making it ideal for multi-channel voltage control, LED dimming, or sensor calibration.
The DAC6578 is ratiometric — output 0 equals ground and output 1023 equals the reference voltage. By default, Vref is tied to the power pin, but you can cut a jumper to supply an external precision reference for more accurate output control.
Key Features
- 8× 10-Bit DAC Channels – Independent voltage outputs from a single chip
- I2C Interface – Simple two-wire control from any microcontroller or SBC
- 3.3V or 5V Compatible – Works with any logic level
- Ratiometric Output – 0 to Vref range (Vref tied to power by default, cuttable jumper for external reference)
- STEMMA QT / Qwiic Connectors – Two JST SH connectors for easy I2C daisy-chaining
Also Available
- DAC7578 Breakout – 8-channel 12-bit version for higher resolution
Ideal For
- Multi-channel voltage control and waveform generation
- LED brightness control across multiple channels
- Sensor calibration and test equipment
- Analogue signal simulation
Package Contents
- 1× Adafruit DAC6578 Breakout (assembled)
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- DAC
- A digital-to-analogue converter turns numbers from the microcontroller into a real analogue voltage. It matters if you want to generate simple waveforms, audio-style signals, or variable control voltages rather than just on/off outputs.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
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