LM4811LD/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low power, mono audio amplifier with digital volume control
• Package: 8-pin DIP (Dual In-line Package)
• Essence: The LM4811LD/NOPB is a compact and efficient audio amplifier designed for low-power applications. It offers high-quality audio amplification with the added convenience of digital volume control.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Output Power: 1.3W (4Ω load, 5V supply)
• Total Harmonic Distortion + Noise: 0.1% (1W, 1kHz)
• Shutdown Current: 0.01μA (typical)
• Digital Volume Control Range: -34dB to +6dB
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4811LD/NOPB has an 8-pin DIP package with the following pin configuration:

┌───┐ VDD ──┤ ├─── GND IN+ ──┤ ├─── SHDN IN- ──┤ ├─── VOLUME OUT ─┤ ├─── Bypass └───┘

Functional Features

• Low power consumption makes it ideal for battery-powered devices
• Digital volume control allows precise adjustment of audio levels
• Bypass pin enables direct connection to external volume control circuitry
• Shutdown pin for power-saving mode when not in use
• High-quality audio amplification with low distortion and noise

Advantages and Disadvantages

Advantages: - Low power consumption extends battery life - Digital volume control provides precise audio level adjustment - Compact size and easy integration into various applications - High-quality audio amplification for improved sound experience

Disadvantages: - Limited output power suitable for low-power applications only - Requires external volume control circuitry for more advanced control options

Working Principles

The LM4811LD/NOPB is a class AB mono audio amplifier. It operates by amplifying the input audio signal and delivering it to the connected speaker or load. The digital volume control allows users to adjust the amplification level digitally, providing precise control over the audio output.

Detailed Application Field Plans

The LM4811LD/NOPB is well-suited for various low-power audio applications, including:

1. Portable audio devices such as MP3 players, smartphones, and tablets
2. Wearable devices like smartwatches and fitness trackers
3. IoT (Internet of Things) devices requiring audio amplification
4. Battery-powered audio systems and speakers
5. Automotive audio systems in compact vehicles

Detailed and Complete Alternative Models

1. LM4861: Similar low-power audio amplifier with stereo output capability
2. LM386: Popular audio amplifier IC with adjustable gain control
3. TPA3116D2: High-performance audio amplifier with higher output power capabilities
4. MAX9744: Class D audio amplifier with integrated volume control
5. TDA7052: Mono audio amplifier with built-in DC volume control

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

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