Texas Instruments
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INA326EA/2K5
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INA326EA/2K5

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Amplifier
  • Characteristics: High precision, low noise, low power consumption
  • Package: SOIC (Small Outline Integrated Circuit)
  • 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)
  • Input Common Mode Voltage Range: -Vs + 1.8V to +Vs - 1.8V
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA326EA/2K5 has a total of 8 pins:

  1. V+
  2. V-
  3. REF
  4. RG
  5. OUT
  6. IN-
  7. IN+
  8. NC

Functional Features

  • High common-mode rejection ratio (CMRR)
  • Low input offset voltage and bias current
  • Wide input common-mode voltage range
  • Rail-to-rail output swing capability
  • Low quiescent current

Advantages and Disadvantages

Advantages: - High precision amplification - Low noise performance - Suitable for low-power applications - Wide operating temperature range

Disadvantages: - Limited gain bandwidth product compared to some other amplifiers - Requires external resistors for gain setting

Working Principles

The INA326EA/2K5 is an instrumentation amplifier designed to amplify small differential signals while rejecting common-mode noise. It consists of three operational amplifiers and provides high gain accuracy and stability. The input signals are amplified differentially, and the common-mode noise is suppressed through internal circuitry.

Detailed Application Field Plans

The INA326EA/2K5 is commonly used in various applications, including:

  1. Medical devices: ECG (Electrocardiogram), EEG (Electroencephalogram), and EMG (Electromyography) amplification
  2. Industrial automation: Signal conditioning for sensors and transducers
  3. Test and measurement equipment: Precision signal amplification
  4. Audio equipment: Microphone preamplifiers
  5. Communication systems: Line drivers and receivers

Detailed and Complete Alternative Models

  • INA333: Low-power, precision instrumentation amplifier
  • AD8221: Precision, low power FET input instrumentation amplifier
  • MCP6N11: Zero-drift instrumentation amplifier with low offset voltage

These alternative models offer similar functionality and can be considered as alternatives to the INA326EA/2K5 depending on specific requirements.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van INA326EA/2K5 in technische oplossingen

  1. What is the typical application of INA326EA/2K5?
    - The INA326EA/2K5 is commonly used in precision instrumentation, data acquisition systems, and industrial process control applications.

  2. What is the input voltage range of INA326EA/2K5?
    - The input voltage range of INA326EA/2K5 is typically ±Vs/2, where Vs is the supply voltage.

  3. Can INA326EA/2K5 be used in single-supply applications?
    - Yes, INA326EA/2K5 can be used in single-supply applications with proper biasing and voltage levels.

  4. What is the gain bandwidth product of INA326EA/2K5?
    - The gain bandwidth product of INA326EA/2K5 is typically 10 MHz.

  5. Is INA326EA/2K5 suitable for low-noise applications?
    - Yes, INA326EA/2K5 is designed for low-noise applications, making it suitable for sensitive measurement systems.

  6. What is the common-mode rejection ratio (CMRR) of INA326EA/2K5?
    - The CMRR of INA326EA/2K5 is typically 100 dB.

  7. Can INA326EA/2K5 operate at high temperatures?
    - Yes, INA326EA/2K5 is designed to operate at extended temperature ranges, making it suitable for harsh environments.

  8. What is the power supply voltage range for INA326EA/2K5?
    - The power supply voltage range for INA326EA/2K5 is typically ±2.25V to ±18V.

  9. Does INA326EA/2K5 require external compensation?
    - No, INA326EA/2K5 has internal compensation, simplifying the design process.

  10. Can INA326EA/2K5 be used in bridge sensor applications?
    - Yes, INA326EA/2K5 is well-suited for bridge sensor applications due to its high precision and low noise characteristics.