INA105KU/2K5G4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Instrumentation Amplifier
• Characteristics: High precision, low noise, high common-mode rejection ratio (CMRR)
• Package: SOIC-8
• Essence: Amplification and filtering of weak signals in measurement and instrumentation systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Input Offset Voltage: 50µV (maximum)
• Input Bias Current: 1nA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Common-Mode Rejection Ratio (CMRR): 100dB (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA105KU/2K5G4 has a standard SOIC-8 pin configuration:

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

Functional Features

• High input impedance for accurate signal acquisition
• Low offset voltage and bias current for precise measurements
• Wide supply voltage range for flexibility in various applications
• Excellent common-mode rejection ratio for rejecting noise and interference
• Low distortion and noise for high-quality signal amplification

Advantages and Disadvantages

Advantages: - High precision and accuracy in signal amplification - Low noise and distortion for clean signal reproduction - Wide operating temperature range for versatile applications - Compact SOIC-8 package for space-constrained designs

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

Working Principles

The INA105KU/2K5G4 is an instrumentation amplifier that amplifies weak signals while rejecting common-mode noise. It consists of three operational amplifiers configured in a differential amplifier topology. The input signals are amplified differentially, and the common-mode component is rejected through internal circuitry. The amplified output is then available for further processing or measurement.

Detailed Application Field Plans

The INA105KU/2K5G4 finds extensive use in various measurement and instrumentation systems, including:

1. Biomedical equipment: Amplification of bioelectric signals for monitoring and diagnosis.
2. Industrial process control: Signal conditioning in industrial automation and control systems.
3. Strain gauge measurements: Precise amplification of strain gauge signals in structural analysis.
4. Data acquisition systems: Accurate signal acquisition in scientific research and testing.
5. Temperature and pressure sensing: Amplification of sensor outputs in environmental monitoring.

Detailed and Complete Alternative Models

1. AD620: Instrumentation amplifier with higher gain bandwidth product and lower input offset voltage.
2. INA128: Precision instrumentation amplifier with low noise and high CMRR.
3. AD8221: Low power instrumentation amplifier with rail-to-rail inputs and outputs.
4. MCP6N11: Programmable gain instrumentation amplifier with digitally controlled gain settings.

These alternative models offer different trade-offs in terms of performance, features, and cost, allowing designers to choose the most suitable option for their specific application requirements.

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