Sensors
Boardoza NAU7802 24bit Dual Channel ADC Breakout Board
The Boardoza NAU7802 is a high-resolution, dual-channel 24-bit analog-to-digital converter breakout board specifically designed for weight, pressure, and load cell sensor applications. It integrates the NAU7802 ADC from Nuvoton, known for its low-noise performance, dual differential input channels, and compact design. This board is ideal for use in digital scales, pressure transducers, and any system where precise analog signal acquisition is essential. With I²C communication, it easily interfaces with microcontrollers and embedded systems, enabling flexible and fast integration.
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Key Features
- 24-bit ADC Resolution: Delivers high-accuracy digital conversion for precise sensor readings.
- Dual Differential Inputs: Supports two full differential sensor channels, ideal for load cells.
- Integrated Low-Noise Amplifier: Ensures signal integrity and stable readings in noisy environments.
- Selectable Output Rates: Allows trade-off between measurement speed and precision.
- Simple I²C Interface: Enables easy integration with a wide range of microcontrollers.
Technical Specifications
- Model
- Nuvoton NAU7802
- Input Voltage
- 2.7V – 5.5V
- Supply Current
- 2mA
- Functions
- 24-bit ADC for bridge sensor applications
- ADC Resolution
- 24-bit
- Channels
- 2 Differential Input Channels
- Interface
- I²C
- Operating Temperature
- -40°C ~ +85°C
- Board Dimensions
- 20mm x 40mm
Board Pinout
( J1 ) Sensor Channel 1
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | WHT | - Signal |
| 2 | GRN | + Signal |
| 3 | BLK | - Excitation |
| 4 | RED | + Excitation |
( J2 ) Power & I²C Communication
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | SDA | I²C Serial Data |
| 3 | SCL | I²C Serial Clock |
| 4 | 3.3V | Positive Power Supply |
( J3 ) Advanced Functionality
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VDDA | Analog Power Supply |
| 2 | INT | Interrupt Output Pin |
| 3 | GND | Ground |
( J4 ) Sensor Channel 2
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | GRN | + Signal |
| 2 | WHT | - Signal |
| 3 | BLK | - Excitation |
| 4 | RED | + Excitation |
Datasheet
Download (PDF)Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.