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- I2C 4-20mA DAC Module
Product Description
This is an I2C DAC module that outputs 0-25mA current. It allows you to make your own 4-20mA sensor for establishing robust and long distance wired communications. This board offers a more accurate 4-20mA current output after calibration, which can be used with most 4-20mA devices on markets such as motors, inverters, valves, pumps, etc.
Specification
- Chip Type: GP8302
- Input Signal Range: 12Bit, 0x000-0xFFF (0-25mA)
- Input I2C Signal High Level: 2.7V-5V
- Power Supply: 18V-24V (24V recommended)
- Accuracy: 0.5% before calibration, 0.2% after calibration
- Power Consumption: ＜5mA
- Start-up Time: ＜2ms
- Operating Temperature: -40°C to 125°C
- Load Resistance: Maximum 450Ω load capacity for 18V power supply, maximum 750Ω for 24V
- Load Resistance recommended for Arduino: 220Ω~650Ω (greater than 1/8 watt)
- Output Current: 0-25mA
- I2C Address: 0x58
Hardware Connection Example
How to read the current through the resistor
