# Gravity: GP8503 2-Channel 12bit I2C to 0-2.5V/VCC DAC Module

**Type:** Product page · **SKU:** DFR1034 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-gp8503-2-channel-12bit-i2c-to-0-25vvcc-dac-module.html ([markdown](https://core-electronics.com.au/gravity-gp8503-2-channel-12bit-i2c-to-0-25vvcc-dac-module.html.md))

High-resolution, high-precision, dual-channel DAC voltage output module. Suitable for control projects within 3.3V, such as motor speed control, lighting...

## Pricing

- **Price:** $16.70 (inc GST) — $15.18 AUD, exc GST
- **Quantity discounts:** 6+ $14.42 (exc GST) · 12+ $13.82 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## Description

This is a 2-channel analog voltage output DAC module with I2C communication, 12-bit resolution, and 0.1% precision. It is well-suited for control projects operating within the 3.3V range, such as ESP32, Raspberry Pi, STM32, and other microcontrollers that require analog signal output.

DAC series modules are a range of products that can be controlled through I2C or PWM signals to generate voltage or current output signals. This series of DAC products not only offers a variety of output signal ranges, but also provides three selectable resolutions: 8-bit, 12-bit, and 15-bit. It allows for the choice of either single-channel or dual-channel configurations, and multiple modules can be cascaded to form a multi-channel output.

![Functional Diagram of Gravity: GP8503 2-Channel 12bit I2C to 0-2.5V/VCC DAC Module](https://core-electronics.com.au/attachments/localcontent/DFR1034-GP8503-FUN-en_675369d101a.png)

Functional Diagram of Gravity: GP8503 2-Channel 12bit I2C to 0-2.5V/VCC DAC Module

![Wiring Diagram of Gravity: GP8503 2-Channel 12bit I2C to 0-2.5V/VCC DAC Module](https://core-electronics.com.au/attachments/localcontent/DFR1034-GP8503-CON_16341b3db0c.png)

Wiring Diagram of Gravity: GP8503 2-Channel 12bit I2C to 0-2.5V/VCC DAC Module and Arduino UNO

We provide various models of DAC modules. If you need a different model, please check the selection guide:

**[Click here to get Selection Guide of DAC Modules](https://www.dfrobot.com/blog-13458.html)**

###  Features

10. Support 3.3V-5V power supply.
11. Output voltage error is less than 0.1%.
12. Output voltage linearity error is 0.1%.
13. Two channels of voltage output, either 0-2.5V or 0-VCC, enabling connection and control ofstandard analog voltage devices.
14. Gravity interface, I2C communication, Arduino control, suitable for program automationcontrol.
###  Applications

16. Motor rotational speed regulation
17. Sonorous intensity modulation
18. Indoor and outdoor luminance modulation
19. Display panel backlight automatic adjustment
###  Specification

21. Operating voltage: 3.3V to 5V
22. Communication Method: I2C
23. Chip Type: GP8503
24. Resolution: 12-bit
25. Output Voltage: 0-2.5V or 0-VCC
26. Number of channels: 2 channels
27. Value Range: 0 - 4095 corresponding to 0-2.5V or 0-VCC
28. Output voltage: 0.1%
29. Output voltage linearity error: 0.1%
###  Documents

31. [Product wiki](https://wiki.dfrobot.com/SKU_DFR1034_2_Channel_12bit_I2C_to_0-VCC_DAC)
###  Parts List

33. GP8503:2-Channel 12bit I2C to 0-2.5V/VCC DAC Module ×1
34. Gravity-4P I2C/UART Sensor Cable × 1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/D/F/DFR1034-1.jpg)