INA2321EA/2K5

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: High precision, low power consumption
• Package: SOT-23-5
• Essence: Instrumentation amplifier
• 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: 200kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA2321EA/2K5 has a total of 5 pins:

1. V+
2. V-
3. REF
4. OUT
5. NC

Functional Features

• High common-mode rejection ratio (CMRR)
• Low input offset voltage
• Low quiescent current
• Rail-to-rail output swing
• Wide supply voltage range
• EMI hardened

Advantages and Disadvantages

Advantages: - High precision amplification - Low power consumption - Wide operating temperature range - EMI resistance

Disadvantages: - Limited number of pins for additional functionalities - Relatively high cost compared to basic operational amplifiers

Working Principles

The INA2321EA/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 and accuracy. The input stage of the amplifier provides high common-mode rejection by using a differential pair with a high CMRR. The amplified signal is then passed through a low-pass filter to remove any high-frequency noise. The output stage of the amplifier provides a rail-to-rail swing, allowing it to operate with a wide range of input and output voltages.

Detailed Application Field Plans

The INA2321EA/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: Engine control units, battery management systems
5. Communication systems: Audio amplification, line drivers

Detailed and Complete Alternative Models

1. INA2321E/2K5: Similar to INA2321EA/2K5 but without EMI hardening.
2. INA2321EA/1K8: Same as INA2321EA/2K5 but packaged in SOT-23-6.
3. INA2321EA/10K: Higher quantity packaging option with 10,000 units per reel.
4. INA2321EA/2K5R: RoHS compliant version of INA2321EA/2K5.

(Note: This list is not exhaustive and there may be other alternative models available.)

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