This Gravity: GP8630N DAC module functions as a high-precision digital-to-analog converter, transforming I2C or PWM digital signals into stable analog voltage or current outputs. Built around the GP8630N chip, this converter addresses the need for versatile signal generation in industrial and robotics applications by supporting multiple output modes including ±10V, 0-5V, 0-10V, and 4-20mA. The 16-bit resolution ensures fine-grained control for sensitive equipment, making this module an essential tool for automated systems requiring accurate analog inputs.

Bidirectional Control with ±10V Symmetrical Output

Unlike conventional DACs that only provide positive voltage ranges, this 16-bit DAC module generates a symmetrical ±10V output. This feature allows for the direct control of bidirectional devices without requiring complex external bridge circuits. For instance, in servo motor applications, a +10V signal can drive forward rotation, -10V enables reverse rotation, and 0V actuates a stop, significantly simplifying the hardware design for motor drive systems and valve actuators.

Flexible Integration and Wide Compatibility

Designed for broad interoperability, this I2C/PWM DAC module seamlessly interfaces with 3.3V and 5V logic levels. The dual-mode input capability ensures compatibility with a wide range of microcontrollers. Users can easily integrate this device into projects using Arduino for rapid prototyping, ESP32 for IoT-connected industrial nodes, or Raspberry Pi for complex computing tasks. Furthermore, the support for 8 configurable I2C addresses enables the cascading of multiple units, allowing simultaneous control of up to 8 devices on a single bus.

Features:

• Supports ±10V symmetrical high-voltage output for bidirectional control
• Provides standard 4-20mA current loop output for industrial sensors
• High 16-bit resolution with low full-scale error (±0.2%)
• Dual interface support: I2C and PWM input signals
• Compatible with 3.3V-5V power supplies and Gravity interface

Specifications:

Basic Parameters

• Chip Model: GP8630N
• Operating Voltage: 3.3V-5V
• Power/Communication Interface: PH2.0-4Pin/3Pin
• Input Signal: I2C / PWM
• Output Signal:
• Current Output Range: 0-24mA
• Voltage Output Range: ±12V/0-6V/0-12V

• Number of Channels: 1 channel
• Resolution:
• 16-bit (I2C mode)
• 8-bit, 10-bit (PWM mode, selectable based on controller)

• Full‑Scale Error: ±0.2% (measured after fitting calibration)

Value Range:

• I2C Mode: 0-65535 corresponds to ±12V, 0-6V, 0-12V, or 0-24mA
• PWM Mode: 0-255 or 0-1023 corresponds to output range

Physical Dimensions

• PCB Dimensions: 42 × 32 × 12.39 mm
• Mounting Hole Spacing: 25mm
• Mounting Hole Diameter: 3.0 mm

Applications:

• Motor Forward/Reverse Control
• Lighting Brightness Control
• Valve and Pump Control
• Signal Generator
• Automation Upgrades for Small Equipment

Documentations:

• Product Wiki

Package Includes:

• 1 x Gravity: GP8630N 1-Channel I2C & PWM to ±10V / 0-5V / 0-10V / 4-20mA DAC Module
• 1 x Gravity-4Pin I2C/UART Sensor Cable
• 1 x Gravity-3Pin Analog Sensor Cable