NJM2113D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low noise, high gain, low distortion
• Package: Dual in-line package (DIP)
• Essence: Monolithic integrated circuit
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage: ±4V to ±18V
• Output Power: 1.2W (typical)
• Total Harmonic Distortion: 0.08% (typical)
• Input Resistance: 100kΩ (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJM2113D has a total of 8 pins arranged as follows:

```

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| | --| V+ V- |-- --| IN OUT |-- --| GND NC |-- |___________| ```

1. V+: Positive power supply pin
2. V-: Negative power supply pin
3. IN: Audio input pin
4. OUT: Audio output pin
5. GND: Ground pin
6. NC: No connection pin

Functional Features

• Low noise: The NJM2113D is designed to minimize noise interference, ensuring high-quality audio output.
• High gain: It provides a high voltage gain, allowing for amplification of weak audio signals.
• Low distortion: The IC produces minimal distortion, resulting in clear and accurate sound reproduction.

Advantages and Disadvantages

Advantages: - Low noise and distortion contribute to high audio fidelity. - Wide operating temperature range allows for various applications. - Compact DIP package facilitates easy integration into electronic circuits.

Disadvantages: - Limited output power compared to higher wattage amplifiers. - Requires external power supply for operation.

Working Principles

The NJM2113D is a class AB audio amplifier that operates by amplifying the input audio signal using a combination of transistors and resistors. It utilizes a push-pull configuration to minimize distortion and improve efficiency. The amplified signal is then output through the OUT pin.

Detailed Application Field Plans

The NJM2113D is commonly used in various audio applications, including:

1. Portable audio devices: Provides amplification for headphones or small speakers.
2. Automotive audio systems: Enhances sound quality in car audio systems.
3. Home audio equipment: Amplifies audio signals for stereo systems or multimedia speakers.
4. Communication devices: Used in intercoms, teleconferencing systems, and other communication devices.

Detailed and Complete Alternative Models

1. LM386: Low voltage audio power amplifier with similar characteristics.
2. TDA2030A: High-performance audio amplifier with higher output power.
3. MAX9744: Class D audio amplifier with integrated volume control.

These alternative models offer different features and specifications, providing options based on specific application requirements.

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