INA125UA

Product Overview

Category: Integrated Circuit (IC)

Use: The INA125UA is a precision instrumentation amplifier designed for accurate signal amplification in various applications.

Characteristics: - High accuracy and precision - Low noise and distortion - Wide input voltage range - Adjustable gain settings - High common-mode rejection ratio (CMRR) - Low power consumption

Package: The INA125UA is available in a small outline package (SOIC) with 8 pins.

Essence: The essence of the INA125UA lies in its ability to amplify weak signals accurately and reliably, making it suitable for use in sensitive measurement and control systems.

Packaging/Quantity: The INA125UA is typically sold in reels or tubes containing multiple units. The exact quantity depends on the supplier and packaging option chosen.

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Input Voltage Range: ±Vs - 0.1V
• Input Offset Voltage: 50µV (max)
• Input Bias Current: 200nA (max)
• Gain Bandwidth Product: 500kHz (typ)
• Common-Mode Rejection Ratio (CMRR): 100dB (min)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The INA125UA has the following pin configuration:

```

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| | --| V+ | --| IN+ | --| IN- | --| REF | --| OUT | --| RL | --| RG | |___________| ```

• V+: Positive supply voltage
• IN+: Non-inverting input
• IN-: Inverting input
• REF: Reference voltage
• OUT: Output
• RL: Load resistor connection
• RG: Gain resistor connection

Functional Features

• High precision amplification of weak signals
• Adjustable gain settings for signal conditioning
• Excellent rejection of common-mode noise
• Low distortion and noise levels
• Wide input voltage range for versatile applications
• Low power consumption for energy efficiency

Advantages and Disadvantages

Advantages: - Accurate and precise signal amplification - Versatile application possibilities - Low noise and distortion levels - Adjustable gain settings for flexibility - High common-mode rejection ratio

Disadvantages: - Limited supply voltage range compared to some other amplifiers - Requires external resistors for gain configuration

Working Principles

The INA125UA is based on the principle of an instrumentation amplifier. It consists of multiple operational amplifiers and precision resistors that provide high gain, high accuracy, and low noise amplification of differential input signals. The amplifier's internal circuitry ensures excellent common-mode rejection, allowing it to effectively amplify small differential signals in the presence of large common-mode voltages.

Detailed Application Field Plans

The INA125UA finds applications in various fields, including but not limited to: 1. Biomedical instrumentation 2. Strain gauge amplification 3. Temperature measurement systems 4. Industrial process control 5. Data acquisition systems 6. Bridge amplification circuits 7. Sensor signal conditioning

Detailed and Complete Alternative Models

1. AD620: Precision Instrumentation Amplifier with Rail-to-Rail Output
2. MCP6N11: Zero-Drift Instrumentation Amplifier
3. LT1167: Precision Instrumentation Amplifier with Programmable Gain

These alternative models offer similar functionality and performance characteristics to the INA125UA and can be considered as alternatives depending on specific requirements and design constraints.

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