M5Stack DAC 2 I2C Unit (GP8413)
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M5Stack DAC 2 I2C Unit (GP8413)
The M5Stack DAC 2 I2C Unit (GP8413) is a compact and high-performance digital-to-analog signal conversion module designed for professional and industrial applications. Also referred to as the M5Stack DAC 2 or DAC2 Unit, this device offers outstanding precision, scalability, and robust safety features.
At its core, the DAC2 Unit utilizes the GP8413 chipset, capable of 15-bit resolution digital-to-analog conversion, outputting two independent analog voltages in the 0–5V or 0–10V range. With up to 0.01% linearity and a voltage error margin of only 0.2%, it ensures highly reliable and stable analog signal generation.
Key Features of M5Stack DAC 2 I2C Unit (GP8413)
-
15-bit High-Precision DAC Output
Converts digital signals into two independent 0–5V or 0–10V analog outputs with exceptional accuracy. -
I2C Communication (Default Address: 0x59)
Easy and reliable data transmission with support for multiple parallel connections thanks to a 3-bit hardware address, enabling up to 8 DAC2 Units on a single I2C bus. -
High Precision, Minimal Error
Achieves 0.01% linearity and maintains a low output voltage error (0.2%), delivering professional-grade analog signal quality. -
Built-in Short-Circuit Protection
Protects the module by automatically disabling output in case of a short between the output pins and ground. -
Compact, Reliable, and Expandable Design
Perfect for use in scalable IoT and industrial environments.
Communication Protocol
The M5Stack DAC 2 communicates using the I2C protocol, with a default address of 0x59. Thanks to address configurability, multiple DAC2 Units can operate simultaneously in complex systems, offering flexibility for advanced designs.
Typical Applications for the DAC2 Unit
-
General Digital-to-Analog Signal Conversion
Seamlessly translate digital commands into precise analog voltages. -
Motor Speed Control
Achieve fine-grained motor control with adjustable analog voltage output. -
LED Dimming Control
Enable smooth and programmable brightness adjustments for LED systems. -
Industrial Inverter and Power Supply Systems
Generate reliable analog references for inverters and voltage regulators. -
Industrial Analog Signal Isolation
Enhance signal integrity and system stability with precision DAC outputs. -
Smart Factory and IoT Applications
Integrate precise analog controls into automated industrial systems.
Includes
- 1x DAC2 Unit
- 1x VH3.96-4P
- 1x Sticker
Applications
- Universal signal conversion
- Motor speed regulation, LED dimming
- Inverter, power supply
- Industrial analog signal isolation
Specification
| DAC Chip | GP8413 |
| Rresolution Ratio | 15Bit |
| I2C Serial Communication | 0x59 (default) |
| Maximum Output Voltage | 10V |
| Output Voltage Error | <0.2% |
| Output Voltage Linearity error | 0.01% |
| Operating Temperature | 0-40°C |
| Product Size | 32* 24* 10.2mm |
| Package Size | 136* 92* 13.7mm |
| Product Weight | 5g |
| Package Weight | 13.3g |
FAQs – M5Stack DAC 2 I2C Unit (GP8413)
Q1: What communication protocol does the M5Stack DAC 2 Unit use?
A:
The M5Stack DAC 2 Unit uses the I2C communication protocol with a default address of 0x59. This allows for easy connection and reliable data transmission between the DAC2 Unit and microcontrollers like M5Core.
Q2: How many DAC2 Units can I connect in one system?
A:
Thanks to its 3-bit hardware address configuration, you can connect up to 8 DAC2 Units in parallel on the same I2C bus, enabling flexible and scalable system designs.
Q3: What is the resolution and accuracy of the M5Stack DAC 2 I2C Unit?
A:
The DAC2 Unit provides a 15-bit digital-to-analog conversion, achieving up to 0.01% linearity and maintaining a very low output voltage error of only 0.2%. This ensures high precision for industrial and professional applications.
Q4: Does the DAC2 Unit offer any protection features?
A:
Yes, the DAC2 Unit is equipped with short-circuit protection. If the output pins are accidentally shorted to ground, the module automatically enters protection mode to prevent damage.
Q5: What voltage ranges does the DAC2 Unit support?
A:
The M5Stack DAC 2 can output two independent analog voltages, either in the 0–5V or 0–10V range, making it versatile for different application requirements like motor speed control, LED dimming, and signal isolation.
Q6: What are typical use cases for the M5Stack DAC 2 Unit?
A:
Typical applications include:
-
Motor speed control
-
LED brightness adjustment
-
Signal conversion in industrial systems
-
Power inverter reference signal generation
-
Analog signal isolation in smart factories and IoT solutions
Effective Date: March 27, 2025
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