LM4946SQ/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Low power consumption - Small form factor - Wide voltage range operation

Package: SQ package (20-pin LLP)

Essence: The LM4946SQ/NOPB is a high-quality audio amplifier designed for various applications, including portable devices, multimedia systems, and automotive audio systems.

Packaging/Quantity: The LM4946SQ/NOPB is available in tape and reel packaging. Each reel contains 2500 units.

Specifications

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

Pin Configuration

The LM4946SQ/NOPB has a 20-pin LLP package with the following pin configuration:

1. VDD
2. GND
3. SDZ
4. SDY
5. SDA
6. SCL
7. NC
8. NC
9. NC
10. NC
11. NC
12. NC
13. NC
14. NC
15. NC
16. NC
17. NC
18. LOUT
19. ROUT
20. SHUTDOWN

Functional Features

• Built-in thermal shutdown protection
• Short-circuit and overcurrent protection
• I2C control interface for easy integration
• Low quiescent current for power efficiency
• Pop and click suppression during power-on/off transitions

Advantages and Disadvantages

Advantages: - High-quality audio output - Wide operating voltage range - Compact package size - Low power consumption

Disadvantages: - Limited output power compared to larger amplifiers - Requires external components for full functionality

Working Principles

The LM4946SQ/NOPB is based on a class AB amplifier architecture. It utilizes a combination of analog and digital circuitry to amplify audio signals with high fidelity. The I2C control interface allows for easy configuration and adjustment of various parameters.

Detailed Application Field Plans

The LM4946SQ/NOPB is suitable for a wide range of applications, including: 1. Portable devices (e.g., smartphones, tablets, portable media players) 2. Multimedia systems (e.g., laptops, desktop computers, gaming consoles) 3. Automotive audio systems (e.g., car stereos, infotainment systems)

Detailed and Complete Alternative Models

1. LM4863SQ/NOPB: Similar audio amplifier with higher output power capability.
2. LM4950SQ/NOPB: Audio amplifier with integrated volume control and equalization features.
3. LM4985SQ/NOPB: Class D audio amplifier with higher efficiency and lower power consumption.

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

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