INA126EA/250

Product Overview

Category

The INA126EA/250 belongs to the category of integrated circuits (ICs) specifically designed for instrumentation amplifiers.

Use

This product is commonly used in applications that require precise and accurate amplification of small signals, such as in medical devices, industrial measurement equipment, and scientific instruments.

Characteristics

• High precision: The INA126EA/250 offers high accuracy and low offset voltage, ensuring reliable signal amplification.
• Low noise: It provides a low noise figure, minimizing interference and improving signal quality.
• Wide input voltage range: This amplifier can handle a wide range of input voltages, making it versatile for various applications.
• Low power consumption: The INA126EA/250 is designed to consume minimal power, making it suitable for battery-powered devices.
• Temperature stability: It exhibits excellent temperature stability, allowing consistent performance across different operating conditions.

Package

The INA126EA/250 comes in a small outline package (SOIC) with eight pins. This package type ensures easy integration into circuit boards and facilitates mass production.

Essence

The essence of the INA126EA/250 lies in its ability to accurately amplify weak signals while maintaining high precision and low noise levels.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Supply voltage: ±2.25V to ±18V
• Input offset voltage: 50µV maximum
• Gain bandwidth product: 1MHz
• Common-mode rejection ratio: 120dB minimum
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The INA126EA/250 has eight pins arranged as follows:

1. REF: Reference voltage pin
2. V+: Positive power supply pin
3. V-: Negative power supply pin
4. RG: Gain setting resistor pin
5. IN-: Negative input pin
6. IN+: Positive input pin
7. OUT: Output pin
8. NC: No connection pin

Functional Features

• High gain accuracy: The INA126EA/250 provides precise amplification with a high gain accuracy, ensuring faithful reproduction of the input signal.
• Low distortion: It exhibits low harmonic distortion, maintaining signal integrity and fidelity.
• EMI suppression: This amplifier incorporates electromagnetic interference (EMI) suppression techniques, reducing noise caused by external sources.
• Adjustable gain: The gain of the amplifier can be easily adjusted using an external resistor connected to the RG pin.

Advantages and Disadvantages

Advantages

• High precision amplification
• Low noise figure
• Wide input voltage range
• Low power consumption
• Excellent temperature stability

Disadvantages

• Limited gain bandwidth product compared to some other instrumentation amplifiers
• Requires an external gain-setting resistor for adjusting the gain

Working Principles

The INA126EA/250 operates based on the principle of differential amplification. It amplifies the difference between the positive and negative input signals while rejecting common-mode noise. The amplified output is then available at the OUT pin.

Detailed Application Field Plans

The INA126EA/250 finds applications in various fields, including: 1. Biomedical instrumentation: Used in electrocardiography (ECG), electromyography (EMG), and other medical devices requiring accurate signal amplification. 2. Industrial measurement equipment: Employed in data acquisition systems, strain gauge amplifiers, and pressure transducers for precise measurements. 3. Scientific instruments: Utilized in spectroscopy, chromatography, and other scientific instruments that require high-precision signal amplification.

Detailed and Complete Alternative Models

Some alternative models to the INA126EA/250 include: - AD620: A low-cost instrumentation amplifier with similar characteristics. - INA128: Offers higher gain bandwidth product and lower input offset voltage compared to the INA126EA/250. - AD8221: Provides high precision and low noise amplification for demanding applications.

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