INA125U/2K5

Product Overview

• Category: Integrated Circuit (IC)
• Use: Instrumentation Amplifier
• Characteristics: High precision, low noise, low power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Differential amplifier with high common-mode rejection ratio
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: ±150µV (maximum)
• Input Bias Current: ±100nA (maximum)
• Gain Bandwidth Product: 200kHz (typical)
• Input Common-Mode Voltage Range: -Vs + 1.8V to +Vs - 1.8V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The INA125U/2K5 has a total of 8 pins:

1. V+
2. V-
3. RG
4. REF
5. OUT
6. NC
7. NC
8. GND

Functional Features

• High accuracy amplification of differential signals
• Excellent rejection of common-mode noise
• Low input offset voltage and bias current
• Wide supply voltage range for flexibility in various applications
• Low power consumption for energy-efficient designs

Advantages and Disadvantages

Advantages

• High precision amplification of small differential signals
• Effective suppression of common-mode noise
• Versatile supply voltage range allows for diverse applications
• Low power consumption extends battery life in portable devices

Disadvantages

• Limited gain bandwidth product compared to some alternative models
• Higher cost compared to basic operational amplifiers

Working Principles

The INA125U/2K5 is based on the principle of a differential amplifier. It amplifies the difference between two input signals while rejecting any common-mode noise present in both signals. This allows for accurate measurement and amplification of small differential signals in the presence of noise.

Detailed Application Field Plans

The INA125U/2K5 is commonly used in various applications, including:

1. Strain gauge amplification in load cells and force sensors
2. Thermocouple and RTD (Resistance Temperature Detector) signal conditioning
3. Biomedical instrumentation for precise measurement of biological signals
4. Industrial process control and automation systems
5. Precision data acquisition systems

Detailed and Complete Alternative Models

1. AD8221: Instrumentation Amplifier with higher gain bandwidth product
2. INA333: Low-power Instrumentation Amplifier with lower supply voltage range
3. AD620: Instrumentation Amplifier with lower cost and wider temperature range

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

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