INA2143UA

Product Overview

Category: Integrated Circuit (IC)
Use: Amplifier
Characteristics: High precision, low offset voltage, low quiescent current
Package: SOIC (Small Outline Integrated Circuit)
Essence: Precision instrumentation amplifier
Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

Supply Voltage: ±2.25V to ±18V
Input Offset Voltage: 10µV (maximum)
Quiescent Current: 350µA (maximum)
Gain Bandwidth Product: 1MHz (typical)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA2143UA has a total of 8 pins:

V+
V-
REF
IN-
IN+
OUT
RG
GND

Functional Features

High common-mode rejection ratio (CMRR)
Low input bias current
Wide supply voltage range
Rail-to-rail output swing capability
Internal gain setting resistor (RG)

Advantages and Disadvantages

Advantages: - High precision amplification - Low power consumption - Wide operating temperature range - Versatile application possibilities

Disadvantages: - Limited gain bandwidth product compared to some alternatives - Higher cost compared to basic operational amplifiers

Working Principles

The INA2143UA is a precision instrumentation amplifier that amplifies small differential signals while rejecting common-mode noise. It consists of three operational amplifiers and precision resistors that provide high accuracy amplification. The internal gain setting resistor allows for easy configuration of the desired gain.

Detailed Application Field Plans

The INA2143UA is commonly used in various applications, including:

Medical equipment: ECG amplification, blood pressure monitoring
Industrial automation: Sensor signal conditioning, process control
Test and measurement: Data acquisition systems, strain gauge amplification
Automotive: Engine control units, battery management systems

Detailed and Complete Alternative Models

AD8221: Precision Instrumentation Amplifier, similar specifications and features
INA333: Low-Power, Precision Instrumentation Amplifier, lower power consumption
AD8429: High Common-Mode Voltage, Precision Instrumentation Amplifier, higher common-mode voltage range

(Note: This is not an exhaustive list of alternative models, but provides a few examples.)

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van INA2143UA in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of INA2143UA in technical solutions:

Q: What is INA2143UA? A: INA2143UA is a precision current-sensing amplifier that can accurately measure small differential voltages across a shunt resistor.
Q: What is the purpose of using INA2143UA in technical solutions? A: INA2143UA is commonly used for current sensing and monitoring applications, such as motor control, power management, battery monitoring, and industrial automation.
Q: How does INA2143UA work? A: INA2143UA amplifies the voltage drop across a shunt resistor and provides an output voltage proportional to the measured current.
Q: What is the input voltage range of INA2143UA? A: The input voltage range of INA2143UA is typically ±200mV, allowing it to measure small voltage differentials across the shunt resistor.
Q: What is the accuracy of INA2143UA? A: INA2143UA has a high accuracy with low offset voltage and low gain error, typically providing better than 0.1% accuracy.
Q: Can INA2143UA measure both AC and DC currents? A: Yes, INA2143UA can measure both AC and DC currents as long as the frequency components fall within its specified bandwidth.
Q: Does INA2143UA require external calibration? A: INA2143UA has internal calibration features, but it may still require some external calibration to achieve optimal accuracy.
Q: What is the maximum supply voltage for INA2143UA? A: The maximum supply voltage for INA2143UA is typically around ±18V.
Q: Can INA2143UA handle high common-mode voltages? A: Yes, INA2143UA has a high common-mode voltage range, typically up to ±200V, making it suitable for applications with high common-mode voltages.
Q: Are there any application notes or reference designs available for INA2143UA? A: Yes, Texas Instruments provides application notes and reference designs that can help users understand and implement INA2143UA in various technical solutions.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications of INA2143UA.