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INA2128U
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INA2128U

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Amplifier
  • Characteristics: High precision, low offset voltage, low noise
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Instrumentation amplifier
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Supply Voltage Range: ±2.25V to ±18V
  • Input Offset Voltage: 50µV (maximum)
  • Gain Bandwidth Product: 1MHz
  • Input Bias Current: 500nA (maximum)
  • Common Mode Rejection Ratio: 100dB (minimum)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA2128U has a total of 8 pins:

  1. V+ (Positive Power Supply)
  2. V- (Negative Power Supply)
  3. REF (Reference Voltage)
  4. IN- (Inverting Input)
  5. IN+ (Non-Inverting Input)
  6. OUT (Output)
  7. NC (No Connection)
  8. NC (No Connection)

Functional Features

  • High accuracy amplification of differential signals
  • Low input offset voltage for precise measurements
  • Wide supply voltage range for versatile applications
  • Excellent common mode rejection ratio for rejecting noise
  • Low noise output for clean signal amplification

Advantages and Disadvantages

Advantages: - High precision amplification - Low offset voltage - Low noise output - Wide supply voltage range

Disadvantages: - Limited gain bandwidth product - Higher cost compared to basic operational amplifiers

Working Principles

The INA2128U is an instrumentation amplifier designed to amplify small differential signals with high accuracy. It consists of three operational amplifiers configured in a specific way to provide high gain and excellent common mode rejection. The inputs are buffered and the output is differential, allowing for precise measurements in noisy environments.

Detailed Application Field Plans

The INA2128U is commonly used in various applications, including:

  1. Medical equipment: ECG (Electrocardiogram) amplification
  2. Industrial control systems: Sensor signal conditioning
  3. Audio equipment: Microphone preamplification
  4. Precision measurement instruments: Strain gauge amplification
  5. Communication systems: Signal conditioning for data transmission

Detailed and Complete Alternative Models

  1. AD620: Low power instrumentation amplifier
  2. INA128: Precision instrumentation amplifier
  3. AD8221: Rail-to-rail instrumentation amplifier
  4. LT1167: High precision instrumentation amplifier
  5. MCP6N11: Zero-drift instrumentation amplifier

These alternative models offer similar functionality and can be considered as substitutes for the INA2128U in various applications.

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기술 솔루션에 INA2128U 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

Sure! Here are 10 common questions and answers related to the application of INA2128U in technical solutions:

  1. Q: What is the INA2128U? A: The INA2128U is a precision instrumentation amplifier that can accurately measure small differential voltages.

  2. Q: What is the input voltage range of the INA2128U? A: The INA2128U has a wide input voltage range of ±200mV, making it suitable for measuring small signals.

  3. Q: Can the INA2128U operate with a single power supply? A: Yes, the INA2128U can operate with a single power supply ranging from 2.7V to 36V.

  4. Q: What is the gain accuracy of the INA2128U? A: The gain accuracy of the INA2128U is typically 0.01%, ensuring precise measurements.

  5. Q: Is the INA2128U suitable for low-power applications? A: Yes, the INA2128U has a low quiescent current of 350µA, making it suitable for low-power applications.

  6. Q: Can the INA2128U handle high common-mode voltages? A: Yes, the INA2128U can handle common-mode voltages up to ±13V, allowing it to reject common-mode noise effectively.

  7. Q: Does the INA2128U have built-in protection features? A: Yes, the INA2128U includes built-in protection against overvoltage, reverse polarity, and short circuits.

  8. Q: What is the bandwidth of the INA2128U? A: The INA2128U has a bandwidth of 500kHz, enabling it to accurately measure fast-changing signals.

  9. Q: Can the INA2128U be used in temperature-sensitive applications? A: Yes, the INA2128U has a wide operating temperature range of -40°C to +125°C, making it suitable for temperature-sensitive applications.

  10. Q: What are some typical applications of the INA2128U? A: The INA2128U is commonly used in precision current sensing, motor control, data acquisition systems, and medical instrumentation.

Please note that these answers are general and may vary depending on specific application requirements.