INA2128UA/1KG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: High precision, low offset voltage, low quiescent current
• Package: SOIC-8
• Essence: Instrumentation amplifier
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: ±150µV (maximum)
• Quiescent Current: 700µA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Common Mode Rejection Ratio: 100dB (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA2128UA/1KG4 has the following pin configuration:

```

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| | | OUT | |___________| | | | V-REF | |___________| | | | IN(-) | |___________| | | | IN(+) | |___________| | | | V+ | |___________| | | | GND | |___________| ```

Functional Features

• High accuracy amplification of differential input signals
• Low noise and distortion
• Wide supply voltage range for flexibility in various applications
• Excellent common mode rejection ratio for rejecting common-mode noise

Advantages and Disadvantages

Advantages: - High precision amplification - Low offset voltage - Low quiescent current consumption - Wide operating temperature range

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

Working Principles

The INA2128UA/1KG4 is an instrumentation amplifier designed to amplify small differential input signals with high accuracy. It consists of multiple internal operational amplifiers and precision resistors that provide high gain and excellent common mode rejection ratio. The device operates by amplifying the voltage difference between the IN(+) and IN(-) inputs, while rejecting any common-mode noise present in the signal.

Detailed Application Field Plans

The INA2128UA/1KG4 is commonly used in various applications where accurate amplification of small differential signals is required. Some of the typical application fields include:

1. Sensor Signal Conditioning: Amplifying low-level sensor signals for measurement and control systems.
2. Medical Instrumentation: Precise amplification of bioelectric signals in medical devices such as ECG monitors and EEG machines.
3. Industrial Automation: Signal conditioning in industrial automation systems for accurate measurement and control.
4. Audio Equipment: High-fidelity audio amplification for professional audio equipment and consumer electronics.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the INA2128UA/1KG4 are:

1. AD8221: Precision Instrumentation Amplifier with similar specifications and performance.
2. LT1167: Low Power Precision Instrumentation Amplifier with wide supply voltage range.
3. MCP6N11: Programmable Gain Instrumentation Amplifier with digitally selectable gains.

These alternative models offer similar functionality and can be suitable replacements depending on specific requirements.

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