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INA125UAG4
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INA125UAG4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Instrumentation Amplifier
  • Characteristics: High precision, low noise, low power consumption
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Amplification of small differential signals with high accuracy
  • 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 +85°C

Pin Configuration

The INA125UAG4 has the following pin configuration:

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

Functional Features

  • High common-mode rejection ratio (CMRR) of 86dB (minimum)
  • Low input offset voltage drift of 0.5µV/°C (typical)
  • Programmable gain from 1 to 10,000
  • Low quiescent current of 350µA (typical)
  • Wide supply voltage range for flexibility in various applications

Advantages and Disadvantages

Advantages

  • High precision amplification of small differential signals
  • Low noise performance for accurate signal processing
  • Low power consumption for energy-efficient designs
  • Wide operating temperature range for versatility in different environments

Disadvantages

  • Limited maximum gain bandwidth product compared to some alternative models
  • Single-channel configuration may not be suitable for certain multi-channel applications

Working Principles

The INA125UAG4 is an instrumentation amplifier designed to amplify small differential signals with high accuracy. It consists of three operational amplifiers and precision resistors that provide a high gain, high common-mode rejection ratio, and low input offset voltage. The device operates by amplifying the difference between the IN+ and IN- inputs while rejecting common-mode signals.

Detailed Application Field Plans

The INA125UAG4 finds applications in various fields including:

  1. Medical equipment: ECG (Electrocardiogram), EEG (Electroencephalogram), and other bio-potential measurements
  2. Industrial automation: Sensor signal conditioning, strain gauge amplification
  3. Precision weighing scales: Load cell signal amplification
  4. Data acquisition systems: Bridge measurements, thermocouple amplification
  5. Test and measurement equipment: Signal conditioning for accurate measurements

Detailed and Complete Alternative Models

  1. AD8221: Instrumentation amplifier with higher gain bandwidth product
  2. INA333: Low-power instrumentation amplifier with lower supply voltage range
  3. AD620: Instrumentation amplifier with lower input offset voltage

These alternative models offer different specifications and features, allowing designers to choose the most suitable option based on their specific requirements.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von INA125UAG4 in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of INA125UAG4 in technical solutions:

  1. Q: What is the INA125UAG4? A: The INA125UAG4 is a precision instrumentation amplifier designed for accurate amplification of low-level signals in various applications.

  2. Q: What is the input voltage range of the INA125UAG4? A: The input voltage range of the INA125UAG4 is typically ±Vs/2, where Vs is the supply voltage.

  3. Q: What is the gain range of the INA125UAG4? A: The INA125UAG4 has a gain range from 1 to 1000, which can be set using external resistors.

  4. Q: Can the INA125UAG4 operate with a single power supply? A: Yes, the INA125UAG4 can operate with a single power supply as long as it is within the specified voltage range.

  5. Q: What is the common-mode rejection ratio (CMRR) of the INA125UAG4? A: The CMRR of the INA125UAG4 is typically 120 dB, which ensures excellent rejection of common-mode noise.

  6. Q: Is the INA125UAG4 suitable for low-power applications? A: Yes, the INA125UAG4 has a low quiescent current consumption, making it suitable for low-power applications.

  7. Q: Can the INA125UAG4 handle high-frequency signals? A: The INA125UAG4 has a bandwidth of 200 kHz, allowing it to handle moderate high-frequency signals.

  8. Q: Does the INA125UAG4 have built-in protection features? A: Yes, the INA125UAG4 includes built-in protection against overvoltage and reverse polarity conditions.

  9. Q: What is the temperature range of operation for the INA125UAG4? A: The INA125UAG4 can operate within a temperature range of -40°C to +125°C.

  10. Q: Can the INA125UAG4 be used in medical applications? A: Yes, the INA125UAG4 is suitable for medical applications such as patient monitoring and ECG amplification due to its high accuracy and low noise characteristics.

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