LM1877MX-9/NOPB

Product Overview

Category

The LM1877MX-9/NOPB belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in audio amplifier applications.

Characteristics

• The LM1877MX-9/NOPB is a dual audio power amplifier with a maximum output power of 2.1 watts per channel.
• It operates on a single supply voltage ranging from 4V to 18V.
• This IC is designed for use in portable devices and low-voltage applications.
• It offers low distortion and high signal-to-noise ratio, ensuring high-quality audio reproduction.

Package

The LM1877MX-9/NOPB is available in a small outline package (SOIC) with 8 pins.

Essence

The essence of the LM1877MX-9/NOPB lies in its ability to amplify audio signals with low distortion and high fidelity, making it suitable for various audio applications.

Packaging/Quantity

The LM1877MX-9/NOPB is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 4V to 18V
• Output Power: 2.1W per channel
• Total Harmonic Distortion: <0.5%
• Signal-to-Noise Ratio: >80dB
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOIC-8

Detailed Pin Configuration

The LM1877MX-9/NOPB has the following pin configuration:

1. VCC (Power Supply)
2. IN1- (Input 1 Negative)
3. IN1+ (Input 1 Positive)
4. GND (Ground)
5. OUT1 (Output 1)
6. IN2+ (Input 2 Positive)
7. IN2- (Input 2 Negative)
8. OUT2 (Output 2)

Functional Features

• Dual-channel audio amplification
• Low distortion for high-quality audio reproduction
• Wide operating voltage range for flexibility in power supply selection
• Thermal shutdown protection to prevent overheating
• Short-circuit and overcurrent protection for enhanced reliability

Advantages and Disadvantages

Advantages

• High-quality audio output with low distortion
• Wide operating voltage range allows for versatile applications
• Compact package size for space-constrained designs
• Built-in protection features enhance reliability

Disadvantages

• Limited output power compared to higher wattage amplifiers
• Not suitable for high-power audio applications

Working Principles

The LM1877MX-9/NOPB operates as a class AB audio amplifier. It amplifies the input audio signals using internal transistors and delivers the amplified signals to the respective output channels. The IC ensures low distortion and high fidelity by employing feedback mechanisms and precision circuitry.

Detailed Application Field Plans

The LM1877MX-9/NOPB finds applications in various audio-related fields, including: 1. Portable audio devices such as MP3 players and smartphones 2. Headphone amplifiers 3. Home audio systems 4. Automotive audio systems 5. Multimedia speakers

Detailed and Complete Alternative Models

1. TDA7266M: Dual audio power amplifier with similar specifications and package type.
2. LM386: Low-voltage audio power amplifier with lower output power but smaller package size.
3. TPA3116D2: Class D audio amplifier with higher output power and efficiency.

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

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