LM4990MMX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power audio amplifier
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: The LM4990MMX/NOPB is a high-quality audio amplifier designed for portable devices such as smartphones, tablets, and portable media players.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Power Supply Voltage: 2.5V to 5.5V
• Output Power: Up to 1W
• Total Harmonic Distortion + Noise (THD+N): 0.1% at 1kHz, 0.5W
• Signal-to-Noise Ratio (SNR): 100dB
• Shutdown Current: 0.01μA (typical)

Pin Configuration

The LM4990MMX/NOPB has the following pin configuration:

1. IN-
2. IN+
3. GND
4. SHUTDOWN
5. VDD
6. OUT
7. Bypass
8. BYPASS

Functional Features

• Low power consumption
• Wide operating voltage range
• Excellent audio quality with low distortion and noise
• Shutdown mode for power-saving when not in use
• Short-circuit and thermal protection

Advantages and Disadvantages

Advantages: - High-quality audio output - Low power consumption - Wide operating voltage range - Protection features for enhanced reliability

Disadvantages: - Limited output power compared to higher wattage amplifiers - Only suitable for low-power audio applications

Working Principles

The LM4990MMX/NOPB is a class AB audio amplifier that amplifies low-power audio signals. It operates by receiving an input audio signal through the IN+ and IN- pins, which is then amplified and delivered to the OUT pin. The amplifier is powered by a voltage supply connected to the VDD pin.

Detailed Application Field Plans

The LM4990MMX/NOPB is commonly used in portable electronic devices where high-quality audio amplification is required. Some of its application fields include:

1. Smartphones
2. Tablets
3. Portable media players
4. Bluetooth speakers
5. Gaming consoles

Detailed and Complete Alternative Models

• TPA3116D2: A higher-power audio amplifier with integrated digital-to-analog converter (DAC)
• LM386: A low-power audio amplifier suitable for battery-powered applications
• MAX9744: A compact audio amplifier with built-in volume control

These alternative models offer different features and power capabilities, providing options for various audio amplification requirements.

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