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

Applications

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

Specification

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)
FullScale 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