7Semi NAU7802 24bit ADC for Weigh Scales, ADC Bridge Sensor

The 7Semi NAU7802 24-bit ADC Module is a high-precision load-cell and bridge-sensor interface designed for weigh scales, force measurement, and other precision sensing applications. It uses the NAU7802 24-bit sigma-delta ADC with an integrated low-noise programmable gain amplifier, built-in filtering, and I²C interface. This module provides stable, low-drift, high-resolution measurements with minimal external components, making it ideal for embedded and industrial systems.

Technical Specification:

• ADC Resolution: 24-bit (up to 23-bit effective resolution)
• PGA Gain: Selectable gain settings from 1 to 128
• Supply Voltage: 2.7V to 5.5V
• Interface: I²C digital communication
• Input Type: Differential input for load cells/bridge sensors
• Built-in Filters: 50Hz and 60Hz noise rejection filters
• Sampling Rate: Up to approximately 320 samples per second
• Low Power Modes: Multiple power-saving states and low standby current
• Onboard Temperature Sensor: For improved stability and compensation

Features:

• High-resolution 24-bit measurement suitable for precision weighing
• Integrated programmable gain amplifier for small sensor signals
• Differential input ideal for load cells and strain gauges
• Built-in mains noise filtering for stable readings
• Wide supply voltage range supports battery-powered devices
• Low power consumption for portable applications
• Simple I²C interface makes integration easy with microcontrollers
• Minimal external components required for operation

Applications:

• Digital weigh scales and precision weighing systems
• Load cell interfaces in industrial automation
• Strain gauge measurement and force sensing
• IoT measurement nodes and battery-powered sensing devices
• Instrumentation, calibration modules, and data acquisition systems
• Robotics and industrial monitoring systems requiring accurate force/weight data