LM4918LQ/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Low power consumption - Small package size - Wide supply voltage range - Excellent audio quality

Package: LQFP (Quad Flat Package)

Essence: The LM4918LQ/NOPB is a high-performance audio amplifier IC designed for various audio applications. It provides excellent audio quality while consuming low power and comes in a compact LQFP package.

Packaging/Quantity: The LM4918LQ/NOPB is available in tape and reel packaging, with 250 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.2W
• Total Harmonic Distortion (THD): <0.1%
• Signal-to-Noise Ratio (SNR): >90dB
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4918LQ/NOPB has a total of 32 pins, which are assigned specific functions. Here is the detailed pin configuration:

Pin 1: VDD Pin 2: INP1- Pin 3: INP1+ Pin 4: BYPASS Pin 5: GND Pin 6: OUT1 Pin 7: OUT2 ... Pin 32: VSS

Functional Features

• Single-ended or differential input configuration
• Adjustable gain control
• Thermal shutdown protection
• Short-circuit and over-temperature protection
• Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages: - High audio performance - Low power consumption - Compact package size - Wide supply voltage range - Protection features for reliable operation

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

Working Principles

The LM4918LQ/NOPB is a class AB audio amplifier that amplifies low-power audio signals. It utilizes a combination of analog and digital circuitry to provide high-quality audio amplification while minimizing power consumption. The amplifier operates by receiving an input audio signal, amplifying it, and delivering the amplified signal to the output.

Detailed Application Field Plans

The LM4918LQ/NOPB can be used in various audio applications, including but not limited to: 1. Portable audio devices (e.g., smartphones, MP3 players) 2. Bluetooth speakers 3. Headphone amplifiers 4. Home audio systems 5. Automotive audio systems

Detailed and Complete Alternative Models

1. LM4863LQ/NOPB: Similar audio amplifier IC with higher output power capability.
2. LM386N-4/NOPB: Low-power audio amplifier IC with a simpler pin configuration.
3. TPA3116D2PWPR: Class D audio amplifier IC with higher efficiency and power output.

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

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