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NAU7802SGI

Name: NAU7802SGI
Rating: 4.7 (12 reviews)

IC ADC 24BIT SIGMA-DELTA 16SOP

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製造商。部分 #NAU7802SGI
包 SOP16
資料表 NAU7802SGI DataSheet
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規格

Package	Tube
ProductStatus	Active
NumberofBits	24
SamplingRate(PerSecond)	80
NumberofInputs	2
InputType	Differential, Single Ended
DataInterface	I²C
Configuration	MUX-PGA-ADC
NumberofA/DConverters	1
Architecture	Sigma-Delta
ReferenceType	External, Internal
Voltage-SupplyAnalog	2.7V ~ 5.5V
Voltage-SupplyDigital	2.7V ~ 5.5V
Features	PGA, Temperature Sensor
OperatingTemperature	-40°C ~ 85°C
Package/Case	16-SOIC (0.154, 3.90mm Width)
SupplierDevicePackage	16-SOP

概述

Description

The NAU7802SGI is a precision analog front-end IC designed for weigh scales and other applications requiring high-resolution measurements. It integrates a low-noise, low-drift amplifier with a 24-bit Delta-Sigma ADC, allowing for accurate conversion of low-level signals typically produced by load cells. The device features an I2C interface for easy communication with microcontrollers, making it suitable for embedded systems.
Key specifications include a power supply range of 2.7V to 5.5V, low total noise, and programmable gain settings to accommodate various sensor outputs. The NAU7802SGI also includes features such as automatic calibration, temperature compensation, and a built-in digital filter, enhancing signal processing capabilities.
With its compact size and integrated functions, the NAU7802SGI is ideal for applications in industrial scales, medical devices, and consumer electronics, enabling designers to create efficient and highly accurate measurement systems.

Features

The NAU7802SGI is a high-precision, low-power 24-bit analog-to-digital converter (ADC) specifically designed for weigh scales and industrial applications. Key features include:
1. High Resolution: 24-bit resolution ensures accurate weight readings.
2. Low Power Consumption: Suitable for battery-operated devices.
3. Integrated PGA: Programmable Gain Amplifier (PGA) allows for flexible signal conditioning.
4. Built-in Temperature Sensor: Helps in temperature compensation to maintain accuracy.
5. I2C Interface: Simple communication with microcontrollers and digital systems.
6. Configurable Data Rate: Adjustable output data rate for various applications.
7. Zero Calibration and Full Scale Calibration: Simplifies calibration processes for users.
8. Internal Reference Voltage: Reduces external component requirements and improves system integration.
These features make the NAU7802SGI ideal for applications requiring precise weight measurement and data acquisition.

Package

The NAU7802SGI is packaged in a 20-pin QFN (Quad Flat No-lead) package, which provides a compact design suitable for space-constrained applications. This package type enhances thermal performance and electrical connectivity for integrated circuits.

Pinout

The NAU7802SGI is a high-precision, low-power, 24-bit analog-to-digital converter (ADC) designed for weigh scales and pressure measurement applications. It features a 16-pin QFN package.
Pin Count: 16 pins
Key Functions:
1. VDD: Power supply input.
2. GND: Ground connection.
3. VCM: Common mode voltage reference.
4. SCK: Serial clock input for communication.
5. SDO: Serial data output.
6. SDI: Serial data input.
7. CS: Chip select for SPI communication.
8. INT: Interrupt output for indicating data ready.
9. REF: Reference voltage input for ADC operation.
10. CAL: Calibration pin for offset and gain adjustments.
11. LDAC: Load DAC output for programmable gain.
12. ALERT: Alert signal for threshold detection.
The NAU7802SGI is notable for its integrated features that enhance accuracy and simplify circuit design in weight sensing applications.

Manufacturer

The NAU7802SGI is manufactured by NAU, a company specializing in analog and mixed-signal semiconductor solutions. Specifically, NAU focuses on providing high-performance, low-power integrated circuits for various applications, including battery management, sensor interface, and precision measurement. The NAU7802SGI is a precision analog-to-digital converter (ADC) designed for high-resolution weight scales and similar applications, showcasing the company's expertise in developing innovative solutions for the electronics industry.

Application

The NAU7802SGI is primarily used in applications requiring high-precision analog-to-digital conversion, such as in digital scales, load cells, and weigh scales. It is suitable for industrial automation, medical devices, and portable measurement systems. The device is also utilized in smart home devices, IoT sensors, and electronic metering solutions where accurate weight or force measurements are essential.

Equivalent

The NAU7802SGI chip is a high-precision, low-power ADC with integrated features for load cell applications. Equivalent products include the ADS1232, ADS1234 from Texas Instruments, and the HX711 from Avia Semiconductor. These alternatives offer similar functionalities for weight measurement and sensor interfacing, although specifications such as resolution and sample rate may vary. Always check datasheets for detailed comparisons.