INA126U/2K5G4

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 (CMRR)
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: ±150µV (maximum)
• Input Bias Current: ±50nA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Input Common-Mode Voltage Range: -Vs + 1.8V to +Vs - 1.8V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The INA126U/2K5G4 has a total of 8 pins:

1. REF: Reference voltage input
2. RG: Gain resistor connection
3. V+: Positive supply voltage
4. IN+: Non-inverting input
5. IN-: Inverting input
6. V-: Negative supply voltage
7. OUT: Output
8. NC: No connection

Functional Features

• High common-mode rejection ratio (CMRR) of 120dB (minimum)
• Low input offset voltage and bias current for accurate measurements
• Wide input common-mode voltage range for versatile applications
• Low power consumption for energy-efficient operation
• Rail-to-rail output swing for maximum dynamic range

Advantages and Disadvantages

Advantages: - High precision amplification of differential signals - Excellent rejection of common-mode noise - Versatile operating voltage range - Low power consumption

Disadvantages: - Limited gain bandwidth product compared to some other instrumentation amplifiers - Requires external gain resistor for setting the desired amplification level

Working Principles

The INA126U/2K5G4 is an integrated circuit that functions as an instrumentation amplifier. It amplifies the difference between its non-inverting (IN+) and inverting (IN-) inputs while rejecting common-mode signals. The gain of the amplifier is determined by an external gain resistor connected to the RG pin.

Detailed Application Field Plans

The INA126U/2K5G4 finds applications in various fields, including:

1. Biomedical instrumentation: ECG (Electrocardiogram), EEG (Electroencephalogram), EMG (Electromyogram) amplification
2. Industrial process control: Signal conditioning for sensors and transducers
3. Strain gauge amplification: Load cells, pressure sensors, force measurement
4. Temperature measurement: Thermocouples, RTDs (Resistance Temperature Detectors)
5. Data acquisition systems: Precise signal amplification for accurate measurements

Detailed and Complete Alternative Models

1. AD620: Instrumentation amplifier with similar specifications and pin configuration
2. INA128: Higher precision instrumentation amplifier with increased gain bandwidth product
3. AD8221: Low power instrumentation amplifier with rail-to-rail output swing

These alternative models offer similar functionality and can be considered based on specific application requirements.

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