INA321E/2K5

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: High precision, low power consumption
• Package: SOT23-5
• Essence: Instrumentation amplifier
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage: ±1.35V to ±18V
• Input Offset Voltage: ±150µV (maximum)
• Input Bias Current: ±100nA (maximum)
• Gain Bandwidth Product: 200kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA321E/2K5 has a total of 5 pins:

1. Pin 1: Positive Supply Voltage (+Vs)
2. Pin 2: Negative Supply Voltage (-Vs)
3. Pin 3: Input Terminal 1 (IN1)
4. Pin 4: Input Terminal 2 (IN2)
5. Pin 5: Output Terminal (OUT)

Functional Features

• High common-mode rejection ratio (CMRR) of 120dB (typical)
• Low input offset voltage drift of 0.5µV/°C (typical)
• Rail-to-rail output swing
• Low quiescent current of 50µA (typical)
• Wide supply voltage range for flexibility in various applications

Advantages and Disadvantages

Advantages: - High precision amplification - Low power consumption - Wide operating temperature range - Rail-to-rail output swing

Disadvantages: - Limited gain bandwidth product compared to some other models - Higher input offset voltage compared to certain alternatives

Working Principles

The INA321E/2K5 is an instrumentation amplifier designed to amplify small differential signals while rejecting common-mode noise. It consists of three operational amplifiers and precision resistors that provide high gain, high input impedance, and low output impedance. The amplifier operates by amplifying the voltage difference between its two input terminals (IN1 and IN2) and providing the amplified signal at the output terminal (OUT).

Detailed Application Field Plans

The INA321E/2K5 is commonly used in various applications, including:

1. Medical equipment: ECG amplification, blood pressure monitoring
2. Industrial automation: Sensor signal conditioning, process control
3. Test and measurement: Data acquisition systems, strain gauge amplification
4. Automotive electronics: Engine control units, battery management systems
5. Communication systems: Signal conditioning, audio amplification

Detailed and Complete Alternative Models

1. AD8221: Instrumentation amplifier with higher gain bandwidth product
2. MCP6N11: Low-power instrumentation amplifier with lower input offset voltage
3. INA333: Precision instrumentation amplifier with lower quiescent current

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

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