INA111APG4

Product Overview

Category: Integrated Circuit (IC)

Use: The INA111APG4 is a precision instrumentation amplifier designed for accurate signal amplification in various applications. It provides high gain, low noise, and excellent common-mode rejection ratio (CMRR) to ensure precise measurements.

Characteristics: - High gain - Low noise - Excellent CMRR - Wide input voltage range - Low power consumption

Package: DIP-8 (Dual In-Line Package 8)

Essence: The INA111APG4 is an essential component in electronic circuits that require precise amplification of small signals while rejecting common-mode noise.

Packaging/Quantity: The INA111APG4 is typically sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Input Offset Voltage: 50µV (max)
• Input Bias Current: 0.5nA (max)
• Gain Bandwidth Product: 1MHz (typ)
• Input Common-Mode Voltage Range: -Vs + 1.9V to +Vs - 1.9V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The INA111APG4 has eight pins arranged as follows:

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| | | 1 2 3 4 | |_______________________| | | | 5 6 7 8 | |_______________________| ```

1. REF (Reference Voltage): Connects to the reference voltage source.
2. IN- (Inverting Input): Receives the negative input signal.
3. IN+ (Non-Inverting Input): Receives the positive input signal.
4. V- (Negative Power Supply): Connects to the negative power supply.
5. OUT (Output): Provides the amplified output signal.
6. V+ (Positive Power Supply): Connects to the positive power supply.
7. RG (Gain Set Resistor): Sets the gain of the amplifier.
8. NC (No Connection): This pin is not connected and should be left unconnected.

Functional Features

1. High Gain: The INA111APG4 offers a high gain of up to 1000, allowing for precise amplification of small signals.
2. Low Noise: With low input noise voltage and current, the amplifier ensures accurate signal amplification without introducing additional noise.
3. Excellent CMRR: The amplifier exhibits excellent common-mode rejection ratio, minimizing the impact of common-mode noise on the amplified signal.
4. Wide Input Voltage Range: The INA111APG4 can handle a wide range of input voltages, making it suitable for various applications.
5. Low Power Consumption: The amplifier operates with low power consumption, making it energy-efficient.

Advantages and Disadvantages

Advantages: - High gain for accurate signal amplification - Low noise for precise measurements - Excellent CMRR for rejecting common-mode noise - Wide input voltage range for versatile applications - Low power consumption for energy efficiency

Disadvantages: - Limited availability in certain package options - Requires external gain set resistor for adjusting amplification

Working Principles

The INA111APG4 is based on the instrumentation amplifier architecture, which consists of three operational amplifiers (op-amps) and precision resistors. It amplifies the difference between the non-inverting and inverting inputs while rejecting common-mode signals.

The input signal is applied to the non-inverting input (IN+), and the inverting input (IN-) receives the reference voltage (REF). The amplifier amplifies the difference between these two inputs according to the gain set by the external resistor (RG). The amplified output signal is available at the OUT pin.

Detailed Application Field Plans

The INA111APG4 finds applications in various fields where accurate signal amplification is crucial. Some of the common application areas include:

1. Biomedical Instrumentation: Used in medical devices for amplifying bioelectric signals such as ECG, EEG, and EMG.
2. Industrial Automation: Employed in industrial control systems for amplifying sensor signals and measuring physical quantities.
3. Test and Measurement Equipment: Integrated into test and measurement instruments for precise signal amplification and data acquisition.
4. Strain Gauge Amplification: Utilized in strain gauge-based sensors for amplifying small strain signals.
5. Bridge Amplification: Applied in bridge circuits for amplifying differential voltage outputs.

Detailed and Complete Alternative Models

1. AD620: Precision instrumentation amplifier with low noise and high gain.
2. MCP6N11: Programmable gain instrumentation amplifier with low offset voltage and low power consumption.
3. LT1167: Precision