INA2126UAE4

Product Overview

Category: Integrated Circuit (IC)

Use: The INA2126UAE4 is a precision instrumentation amplifier designed for accurate signal amplification in various applications. It provides high common-mode rejection and low offset voltage, making it suitable for precise measurements.

Characteristics: - High common-mode rejection ratio - Low offset voltage - Wide supply voltage range - Low quiescent current - Rail-to-rail output swing

Package: The INA2126UAE4 is available in a small outline integrated circuit (SOIC) package.

Essence: The essence of the INA2126UAE4 lies in its ability to accurately amplify signals while maintaining high precision and low noise.

Packaging/Quantity: The INA2126UAE4 is typically sold in reels or tubes containing a specific quantity of ICs, depending on the manufacturer's packaging specifications.

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Input Offset Voltage: 50µV (maximum)
• Common-Mode Rejection Ratio: 120dB (typical)
• Quiescent Current: 1.5mA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA2126UAE4 has a total of 8 pins arranged as follows:

```

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| | --| V+ OUT |-- --| IN+ REF |-- --| IN- GND |-- --| RG V- |-- |___________| ```

1. V+: Positive power supply pin.
2. OUT: Amplified output signal.
3. IN+: Non-inverting input terminal.
4. REF: Reference voltage input.
5. IN-: Inverting input terminal.
6. GND: Ground pin.
7. RG: Gain-setting resistor connection.
8. V-: Negative power supply pin.

Functional Features

1. High Common-Mode Rejection Ratio: The INA2126UAE4 provides excellent rejection of common-mode signals, allowing for accurate amplification of differential signals even in the presence of noise or interference.

2. Low Offset Voltage: With a low input offset voltage, the INA2126UAE4 minimizes errors caused by voltage differences between the non-inverting and inverting inputs.

3. Wide Supply Voltage Range: The IC can operate from ±2.25V to ±18V, providing flexibility in various applications.

4. Low Quiescent Current: The INA2126UAE4 consumes minimal current when not actively amplifying signals, reducing power consumption and extending battery life in portable devices.

5. Rail-to-Rail Output Swing: The output voltage swing of the amplifier extends close to the supply rails, maximizing the dynamic range of the amplified signal.

Advantages and Disadvantages

Advantages: - High precision and accuracy - Excellent rejection of common-mode signals - Wide supply voltage range - Low power consumption - Rail-to-rail output swing

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

Working Principles

The INA2126UAE4 is based on the principle of an instrumentation amplifier, which amplifies the difference between two input voltages while rejecting common-mode signals. It consists of multiple operational amplifiers and precision resistors configured in a specific manner to achieve high precision and rejection of unwanted signals.

The amplifier amplifies the voltage difference between the non-inverting (IN+) and inverting (IN-) inputs, while maintaining a high common-mode rejection ratio. The gain of the amplifier can be set by an external resistor connected to the RG pin.

Detailed Application Field Plans

The INA2126UAE4 finds applications in various fields where accurate signal amplification is required. Some common application areas include:

1. Industrial Automation: The amplifier can be used for precise measurement and control of sensor signals in industrial automation systems, ensuring accurate monitoring and control of processes.

2. Medical Instrumentation: In medical devices, the INA2126UAE4 can amplify small biomedical signals with high precision, enabling accurate diagnosis and monitoring of patients' vital signs.

3. Test and Measurement Equipment: The IC is suitable for use in test and measurement equipment, such as data acquisition systems and oscilloscopes, where accurate signal amplification is crucial for reliable measurements.

4. Audio Systems: The INA2126UAE4 can be utilized in audio systems to amplify weak audio signals while maintaining low distortion and noise, resulting in high-quality sound reproduction.

Detailed and Complete Alternative Models

1. AD8221: Precision Instrumentation Amplifier with Rail-to-Rail Output Swing.
2. LTC2050: Zero