INA111AU/1KG4

Product Overview

Category: Integrated Circuit (IC)

Use: The INA111AU/1KG4 is a precision instrumentation amplifier designed for accurate signal amplification in various applications.

Characteristics: - High accuracy and precision - Low noise and distortion - Wide input voltage range - High common-mode rejection ratio (CMRR) - Low power consumption

Package: The INA111AU/1KG4 comes in a small outline package (SOIC) with 8 pins.

Essence: This IC is essential for amplifying weak signals accurately and reliably, making it suitable for use in medical devices, industrial automation, and scientific instruments.

Packaging/Quantity: The INA111AU/1KG4 is typically sold in reels or tubes containing multiple units. The exact quantity depends on the supplier and customer requirements.

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: 50µV (maximum)
• Input Bias Current: 0.5nA (maximum)
• Gain Bandwidth Product: 10MHz (typical)
• Common-Mode Rejection Ratio (CMRR): 120dB (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The INA111AU/1KG4 has the following pin configuration:

```

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

Functional Features

• High gain accuracy and stability
• Excellent linearity and low distortion
• Adjustable gain through external resistors
• Built-in protection against overvoltage and reverse polarity
• Low power consumption for energy-efficient operation

Advantages and Disadvantages

Advantages: - High precision amplification - Wide input voltage range - Low noise and distortion - Versatile applications in various industries - Robust protection features

Disadvantages: - Relatively higher cost compared to basic operational amplifiers - Requires external resistors for gain adjustment

Working Principles

The INA111AU/1KG4 is based on the principle of differential amplification. It amplifies the difference between the two input signals (IN+ and IN-) while rejecting common-mode signals. The amplified output signal is then available at the OUT pin.

Application Field Plans

The INA111AU/1KG4 finds extensive use in the following application fields:

1. Medical Devices:

   • ECG (Electrocardiogram) amplification
   • EEG (Electroencephalogram) amplification
   • Blood pressure monitoring

2. Industrial Automation:

   • Sensor signal conditioning
   • Process control systems
   • Robotics

3. Scientific Instruments:

   • Data acquisition systems
   • Spectroscopy
   • Precision measurement equipment

Alternative Models

For users seeking alternative options, the following models can be considered:

1. AD620: Precision Instrumentation Amplifier with similar specifications.
2. INA114: Precision Instrumentation Amplifier with lower power consumption.
3. AD8221: Precision Instrumentation Amplifier with higher CMRR.

These alternatives provide similar functionality and can be suitable replacements depending on specific requirements.

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