LM386N-4/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Low voltage audio power amplifier - Suitable for battery-powered devices - Wide supply voltage range (4V to 12V) - Low quiescent current drain - Excellent power supply rejection ratio - Available in a small package

Package: PDIP (Plastic Dual In-Line Package)

Essence: The LM386N-4/NOPB is a versatile audio amplifier IC that provides low voltage amplification for various audio applications.

Packaging/Quantity: The LM386N-4/NOPB is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

The LM386N-4/NOPB has the following specifications:

• Supply Voltage Range: 4V to 12V
• Quiescent Current Drain: 4 mA
• Voltage Gain: 20 to 200 (adjustable)
• Input Impedance: 50 kΩ
• Output Power: 325 mW
• Total Harmonic Distortion: 0.2% (at 400 mW output)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM386N-4/NOPB has an 8-pin PDIP package with the following pin configuration:

1. Gain Control (GAIN)
2. Input (IN+)
3. Input (IN-)
4. Ground (GND)
5. Output (OUT)
6. Bypass Capacitor (BYPASS)
7. Supply Voltage (VCC)
8. Gain Control (GAIN)

Functional Features

The LM386N-4/NOPB offers the following functional features:

• Adjustable voltage gain for amplification control
• Low quiescent current drain, making it suitable for battery-powered devices
• Excellent power supply rejection ratio, minimizing noise interference
• Built-in bypass capacitor for improved audio performance
• Wide supply voltage range allows flexibility in various applications

Advantages and Disadvantages

Advantages: - Compact size and low power consumption - Versatile audio amplifier suitable for a wide range of applications - Easy to use and integrate into circuits - Adjustable gain for customization - Good power supply rejection ratio

Disadvantages: - Limited output power compared to higher wattage amplifiers - Higher total harmonic distortion at higher output levels - Requires external components for optimal performance

Working Principles

The LM386N-4/NOPB operates as a class AB audio amplifier. It amplifies the input audio signal using an internal gain stage and delivers the amplified signal to the output pin. The gain can be adjusted using the gain control pins. The IC also includes a bypass capacitor that helps improve the audio quality by reducing noise and improving stability.

Detailed Application Field Plans

The LM386N-4/NOPB is commonly used in various audio applications, including but not limited to:

1. Portable audio devices (e.g., MP3 players, portable radios)
2. Battery-powered speakers
3. Intercom systems
4. Guitar amplifiers
5. Audio mixers
6. Personal computer sound cards

Detailed and Complete Alternative Models

Some alternative models to the LM386N-4/NOPB include:

1. LM386-1/NOPB: Similar to LM386N-4/NOPB but with a different gain range (20 to 200).
2. LM380N-8/NOPB: Higher power audio amplifier with an output power of 2.5W.
3. TDA7052/N2: Mono audio amplifier with a supply voltage range of 1.8V to 15V.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific application requirements.

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