LM4808LD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

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

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

Essence: The LM4808LD/NOPB is a high-performance audio amplifier IC designed for various audio applications. It provides excellent sound quality while consuming minimal power.

Packaging/Quantity: The LM4808LD/NOPB is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.25W per channel
• Total Harmonic Distortion (THD): 0.1% at 1kHz, 1W output power
• Signal-to-Noise Ratio (SNR): 95dB
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4808LD/NOPB has a total of 8 pins arranged as follows:

┌───┬───┐ │ 1 │ 8 │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ 4 │ 5 │ └───┴───┘

Pin Description: 1. VDD: Positive supply voltage 2. IN+: Non-inverting input 3. IN-: Inverting input 4. SHUTDOWN: Shutdown control input 5. GND: Ground 6. OUT-: Output terminal (negative) 7. OUT+: Output terminal (positive) 8. VSS: Negative supply voltage

Functional Features

• High-quality audio amplification
• Low power consumption for extended battery life
• Wide operating voltage range allows flexibility in power supply selection
• Shutdown mode for power-saving when not in use
• Short-circuit and thermal protection for enhanced reliability

Advantages and Disadvantages

Advantages: - Excellent sound quality - Low power consumption - Compact package size - Wide operating voltage range

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external components for a complete audio system

Working Principles

The LM4808LD/NOPB is a class AB audio amplifier that utilizes a bridge-tied load (BTL) configuration. It amplifies the audio signal received at the input and delivers it to the connected speakers or headphones. The amplifier operates by modulating the input signal onto a high-frequency carrier, which is then amplified and filtered to produce the desired audio output.

Detailed Application Field Plans

The LM4808LD/NOPB is widely used in various audio applications, including but not limited to: - Portable audio devices (e.g., MP3 players, smartphones, tablets) - Personal computers and laptops - Home audio systems - Automotive audio systems - Gaming consoles - Televisions and multimedia devices

Detailed and Complete Alternative Models

• LM4861: 1W Audio Power Amplifier
• LM386: Low Voltage Audio Power Amplifier
• TPA3116D2: 50W Stereo Class D Audio Amplifier

These alternative models offer different power outputs, features, and package options, providing flexibility for various audio amplifier requirements.

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