INA321EA/250

Product Overview

Category: Integrated Circuit (IC)

Use: The INA321EA/250 is a precision, low-power, single-supply instrumentation amplifier. It is designed for applications that require accurate amplification of small differential signals in the presence of common-mode noise.

Characteristics: - Low power consumption - High accuracy - Single-supply operation - Wide input voltage range - Low offset voltage and drift - Excellent common-mode rejection ratio (CMRR) - Rail-to-rail output swing

Package: The INA321EA/250 is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of the INA321EA/250 is its ability to provide precise amplification of small differential signals while rejecting common-mode noise.

Packaging/Quantity: The INA321EA/250 is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -Vs + 0.1V to +Vs - 0.1V
• Gain Bandwidth Product: 500 kHz
• Input Offset Voltage: ±150 µV (maximum)
• Input Offset Drift: ±1.5 µV/°C (maximum)
• CMRR: 100 dB (minimum)
• Output Swing: Rail-to-Rail
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA321EA/250 has the following pin configuration:

```

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

Functional Features

• Low power consumption allows for longer battery life in portable applications.
• High accuracy ensures precise amplification of small differential signals.
• Single-supply operation simplifies circuit design and reduces cost.
• Wide input voltage range accommodates a variety of signal levels.
• Low offset voltage and drift minimize errors in signal amplification.
• Excellent CMRR reduces the impact of common-mode noise on the amplified signal.
• Rail-to-rail output swing provides maximum dynamic range.

Advantages and Disadvantages

Advantages: - Low power consumption - High accuracy - Wide input voltage range - Excellent CMRR - Rail-to-rail output swing

Disadvantages: - Limited to single-supply operation - Relatively high input offset voltage compared to some alternative models

Working Principles

The INA321EA/250 utilizes a precision operational amplifier architecture to amplify small differential signals. It employs a combination of resistors, capacitors, and transistors to achieve accurate amplification while rejecting common-mode noise.

Detailed Application Field Plans

The INA321EA/250 is suitable for various applications, including but not limited to: 1. Medical instrumentation 2. Industrial process control 3. Data acquisition systems 4. Strain gauge amplifiers 5. Temperature measurement systems 6. Bridge amplifiers 7. Sensor interfaces

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the INA321EA/250 include: 1. AD8221 2. MCP6N11 3. LT1167 4. MAX4209

These alternative models can be considered based on specific application requirements and desired performance characteristics.

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