NAU7802
High-precision 24-bit analog-to-digital converters for accurate signal processing
Manufacturer： nuvoton
series introduction
# NAU7802 Product Series Introduction
## 1. Overview
The NAU7802 is a high - performance, low - power, 24 - bit analog - to - digital converter (ADC) product series specifically designed for precision weighing and other sensor measurement applications. With its advanced features and excellent performance, it has become a popular choice in various industries where accurate and reliable measurement is crucial.
## 2. Key Features
### High - Resolution ADC
- The NAU7802 offers a 24 - bit resolution, which enables it to provide extremely precise measurement results. This high resolution is essential for applications such as weighing scales, where even the slightest change in weight needs to be accurately detected. For example, in a laboratory balance, the high - resolution ADC can accurately measure small samples with a high degree of precision.
- It has a low noise floor, which further enhances the accuracy of the measurement. The low noise ensures that the signal from the sensor is not masked by unwanted electrical noise, resulting in clean and reliable data.
### Low Power Consumption
- One of the significant advantages of the NAU7802 series is its low power consumption. This makes it ideal for battery - powered applications, such as portable weighing devices. The low power design helps to extend the battery life of the device, reducing the frequency of battery replacements and improving the overall user experience.
- It can operate in different power modes, allowing users to optimize the power consumption according to the specific requirements of their application. For instance, in a standby mode, the power consumption can be significantly reduced while still maintaining the ability to quickly wake up and resume normal operation.
### Programmable Gain Amplifier (PGA)
- The NAU7802 is equipped with a programmable gain amplifier. The PGA allows users to adjust the gain of the input signal, which is useful when dealing with sensors that have different output signal levels. For example, if a sensor has a very small output signal, the PGA can be set to a high gain value to amplify the signal and make it easier for the ADC to convert it accurately.
- The gain can be programmed in a wide range, typically from 1 to 128, providing flexibility in different measurement scenarios.
### On - Chip Oscillator
- It features an on - chip oscillator, eliminating the need for an external oscillator in most applications. This simplifies the circuit design and reduces the overall cost and board space requirements. The on - chip oscillator provides a stable clock source for the ADC, ensuring reliable and consistent operation.
### I²C Interface
- The NAU7802 uses an I²C interface for communication with the microcontroller or other host devices. The I²C interface is a widely used serial communication protocol that is easy to implement and supports multi - master and multi - slave configurations. This makes it convenient for integrating the NAU7802 into existing systems and allows for easy data transfer between the ADC and the host device.
## 3. Applications
### Weighing Scales
- The NAU7802 is widely used in various types of weighing scales, including industrial weighing scales, commercial weighing scales, and consumer weighing scales. Its high - resolution ADC and low noise performance ensure accurate weight measurement, while the low power consumption is beneficial for battery - powered portable scales.
- In industrial applications, such as weighing large containers or bulk materials, the NAU7802 can provide reliable and precise weight data, which is crucial for inventory management and quality control.
### Force and Pressure Sensors
- It can also be used in conjunction with force and pressure sensors. The programmable gain amplifier allows for easy adaptation to different sensor output levels, and the high - resolution ADC can accurately measure the small changes in force or pressure. This makes it suitable for applications such as automotive testing, where
Images for reference
NAU7802KGI
16-Dip
16 SOIC