Overview
The NAU7802SGI is a precision low-power 24-bit analog-to-digital converter (ADC) developed by Nuvoton Technology Corporation. This device is designed to provide a complete front-end solution for high-resolution, low-sample-rate applications. It features an onboard low-noise programmable gain amplifier (PGA), an onboard RC or Crystal oscillator, and a precision 24-bit sigma-delta (Σ-Δ) analog-to-digital converter. The NAU7802SGI is particularly suited for applications requiring high accuracy and low power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 24 bits |
| ENOB (Effective Number of Bits) | Up to 23 bits |
| Programmable PGA Gain | 1 to 128 |
| Data Output Interface | 2-wire interface compatible with I2C |
| ADC Data Output Rates | Programmable |
| RMS Noise | Low noise performance |
| Operating Voltage Range | 2.7V to 5.5V |
| Operating Temperature Range | -40°C to 85°C |
| Package | SOP-16 |
| Standby Current | < 1uA |
Key Features
- ADC Feature: ENOB up to 23 bits, programmable PGA gain from 1 to 128
- Data Output: Control interface compatible with I2C, programmable ADC data output rates
- Advanced Features: On-chip calibration, on-chip power-on reset circuit, on-chip temperature sensor
- Power Management: Low power consumption, programmable power management options
- Operating Characteristics: Operating voltage range of 2.7V to 5.5V, operating temperature range of -40°C to 85°C
Applications
- Smart Scales
- Strain Gauges
- Industrial Process Control
- Liquid/Gas Flow Control
- Pressure Sensors
- Voltage Monitors
Q & A
- What is the resolution of the NAU7802SGI ADC?
The NAU7802SGI has a resolution of 24 bits. - What is the effective number of bits (ENOB) of the NAU7802SGI?
The ENOB of the NAU7802SGI is up to 23 bits. - What is the range of the programmable PGA gain in the NAU7802SGI?
The programmable PGA gain ranges from 1 to 128. - What interface does the NAU7802SGI use for data output?
The NAU7802SGI uses a 2-wire interface compatible with I2C for data output. - What are the operating voltage and temperature ranges of the NAU7802SGI?
The operating voltage range is 2.7V to 5.5V, and the operating temperature range is -40°C to 85°C. - What is the standby current of the NAU7802SGI?
The standby current is less than 1uA. - Does the NAU7802SGI have on-chip calibration and power-on reset features?
Yes, the NAU7802SGI includes on-chip calibration and an on-chip power-on reset circuit. - What package type is the NAU7802SGI available in?
The NAU7802SGI is available in an SOP-16 package. - What are some of the target applications for the NAU7802SGI?
Target applications include smart scales, strain gauges, industrial process control, liquid/gas flow control, pressure sensors, and voltage monitors. - Does the NAU7802SGI have a built-in temperature sensor?
Yes, the NAU7802SGI includes an on-chip temperature sensor.
