INA128UA/2K5

Product Overview

• Category: Integrated Circuit (IC)
• Use: Instrumentation Amplifier
• Characteristics: High precision, low noise, high common-mode rejection ratio (CMRR)
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Amplification of small differential signals with high accuracy and rejection of common-mode noise
• Packaging/Quantity: Available in reels or tubes, quantity depends on supplier

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: 50µV (maximum)
• Input Bias Current: 0.1nA (maximum)
• Gain Bandwidth Product: 200kHz (typical)
• Input Common-Mode Voltage Range: ±12V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The INA128UA/2K5 has the following pin configuration:

```

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| | --| V+ OUT |-- --| V- REF |-- --| RG IN- |-- --| G IN+ |-- --| RL NC |-- --| V- N |-- --| V+ C |-- |___________| ```

Functional Features

• High input impedance for accurate signal amplification
• Low noise for improved signal quality
• High CMRR for rejecting common-mode noise
• Wide input common-mode voltage range for versatile applications
• Internal reference voltage for easy calibration

Advantages

• Precise amplification of small differential signals
• Excellent rejection of common-mode noise
• Versatile operating voltage range
• Suitable for low-power applications
• Easy to calibrate due to internal reference voltage

Disadvantages

• Limited gain bandwidth product compared to some other instrumentation amplifiers
• Requires external resistors for setting the gain

Working Principles

The INA128UA/2K5 is an integrated circuit that operates as an instrumentation amplifier. It amplifies small differential signals while rejecting common-mode noise. The input signal is applied to the IN+ and IN- pins, and the amplified output is available at the OUT pin. The gain of the amplifier can be set using external resistors connected to the RG pin.

Detailed Application Field Plans

The INA128UA/2K5 is commonly used in various applications, including:

1. Biomedical instrumentation: ECG (Electrocardiogram), EEG (Electroencephalogram), EMG (Electromyography)
2. Industrial process control: Measurement and monitoring of sensor signals
3. Strain gauge amplification: Accurate measurement of strain in structural elements
4. Data acquisition systems: Precise amplification of low-level signals for accurate data capture
5. Audio equipment: High-fidelity audio amplification with low noise

Detailed and Complete Alternative Models

Some alternative models to the INA128UA/2K5 include:

1. AD620: Instrumentation amplifier with similar characteristics
2. INA114: Precision instrumentation amplifier with higher gain bandwidth product
3. AD8221: Low-power instrumentation amplifier with rail-to-rail inputs and outputs

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific application requirements.

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