Texas Instruments
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INA155EA/2K5G4
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INA155EA/2K5G4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Amplifier
  • Characteristics: High precision, low noise, wide bandwidth
  • Package: SOT-23-5
  • Essence: Instrumentation amplifier
  • Packaging/Quantity: Tape and reel, 3000 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 Range: ±12V
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA155EA/2K5G4 has a total of 5 pins:

  1. Pin 1: Non-inverting input (+IN)
  2. Pin 2: Inverting input (-IN)
  3. Pin 3: Output (OUT)
  4. Pin 4: Negative supply voltage (-VS)
  5. Pin 5: Positive supply voltage (+VS)

Functional Features

  • High common-mode rejection ratio (CMRR) of 100dB (typical)
  • Low input offset voltage drift of 0.5µV/°C (typical)
  • Rail-to-rail output swing
  • Low quiescent current consumption of 500µA (typical)
  • EMI hardened design for improved performance in noisy environments

Advantages and Disadvantages

Advantages: - High precision amplification - Wide operating temperature range - Low noise performance - Small package size for space-constrained applications

Disadvantages: - Limited gain bandwidth product compared to some alternative models - Requires external components for proper operation

Working Principles

The INA155EA/2K5G4 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 provides a high input impedance, allowing the amplifier to interface with various signal sources. The output stage is capable of driving low impedance loads.

Detailed Application Field Plans

The INA155EA/2K5G4 is commonly used in applications requiring precise amplification of small differential signals, such as:

  1. Medical equipment: ECG amplification, blood pressure monitoring
  2. Industrial automation: Sensor signal conditioning, strain gauge amplification
  3. Test and measurement: Data acquisition systems, bridge amplifiers
  4. Audio equipment: Microphone preamplifiers, audio signal conditioning

Detailed and Complete Alternative Models

  1. AD8221: Instrumentation amplifier with higher gain bandwidth product (10MHz)
  2. INA333: Low-power instrumentation amplifier with lower supply voltage range (±1.25V to ±18V)
  3. AD8421: Precision instrumentation amplifier with higher CMRR (120dB)

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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Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng INA155EA/2K5G4 sa mga teknikal na solusyon

  1. What is the typical application of INA155EA/2K5G4?
    - The INA155EA/2K5G4 is commonly used for precision current sensing in various technical solutions.

  2. How does the INA155EA/2K5G4 help in current sensing applications?
    - The INA155EA/2K5G4 provides high accuracy and low offset voltage, making it suitable for precise current measurements.

  3. Can the INA155EA/2K5G4 be used in battery management systems?
    - Yes, the INA155EA/2K5G4 is often utilized in battery management systems for monitoring charging and discharging currents.

  4. Is the INA155EA/2K5G4 suitable for motor control applications?
    - Absolutely, the high precision of the INA155EA/2K5G4 makes it ideal for motor control applications requiring accurate current measurements.

  5. What are the key features of the INA155EA/2K5G4 that make it versatile in technical solutions?
    - The INA155EA/2K5G4 offers wide input common-mode voltage range, low quiescent current, and excellent temperature drift performance.

  6. Can the INA155EA/2K5G4 be used in industrial automation systems?
    - Yes, the robust design and high accuracy of the INA155EA/2K5G4 make it well-suited for industrial automation applications.

  7. Does the INA155EA/2K5G4 support high-side current sensing?
    - Yes, the INA155EA/2K5G4 is capable of high-side current sensing, providing flexibility in system design.

  8. Are there any specific considerations for PCB layout when using the INA155EA/2K5G4?
    - Proper PCB layout techniques should be followed to minimize noise and ensure accurate current measurements with the INA155EA/2K5G4.

  9. Can the INA155EA/2K5G4 be used in automotive electronics?
    - Yes, the INA155EA/2K5G4 is suitable for automotive electronics applications such as battery monitoring and motor control.

  10. What is the recommended supply voltage range for the INA155EA/2K5G4?
    - The INA155EA/2K5G4 operates typically from a single 2.7V to 36V power supply, making it compatible with a wide range of systems.