Product Overview
NAU7802SGI from Nuvoton is a 24-bit precision ADC with 2 differential inputs for weigh scale and instrumentation. I2C interface. Internal LDO and oscillator. 80sps or 320sps. TSSOP-16.
Working Principle
Delta-sigma ADC with programmable gain amplifier (1-128x). Internal reference and clock. I2C for register configuration and data read. Chopping for offset cancellation. Built-in LDO for bridge sensor excitation.
Pin Description
| Pin | Name | Function |
|---|---|---|
| 1-2 | AVDD/AGND | Analog supply |
| 3-4 | AIN1+/AIN1- | Channel 1 input |
| 5-6 | AIN2+/AIN2- | Channel 2 input |
| 7-8 | SDA/SCL | I2C |
Applications
- Weigh scales and load cells
- Strain gauge measurement
- Industrial process control
Alternative Models
| Manufacturer | Part Number | Notes |
|---|---|---|
| Nuvoton | NAU7802SGI-18 | 1.8V I/O version |
| TI | ADS1232IPWR | Similar 24-bit ADC |