LM4911QMM/NOPB

Product Overview

• Category: Audio Amplifier
• Use: Amplifying audio signals for various applications
• Characteristics: High performance, low power consumption, small package size
• Package: QFN (Quad Flat No-Lead)
• Essence: Integrated audio amplifier with advanced features
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Output Power: Up to 1.2W
• Total Harmonic Distortion + Noise: 0.1% (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4911QMM/NOPB has a total of 16 pins arranged as follows:

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| | | 1 2 3 4 5 6 7 8 | |_______________________________________| | | | 9 10 11 12 13 14 15 16 | |_______________________________________| ```

• Pin 1: Shutdown
• Pin 2: Input Bypass Capacitor
• Pin 3: Input
• Pin 4: Ground
• Pin 5: Output
• Pin 6: Gain Select
• Pin 7: Gain Select
• Pin 8: Gain Select
• Pin 9: Gain Select
• Pin 10: Gain Select
• Pin 11: Gain Select
• Pin 12: Gain Select
• Pin 13: Gain Select
• Pin 14: Power Supply
• Pin 15: Bypass Capacitor
• Pin 16: Shutdown

Functional Features

• High-quality audio amplification
• Low power consumption for extended battery life
• Small package size for space-constrained applications
• Integrated shutdown mode for power saving
• Multiple gain select pins for flexible amplification control

Advantages and Disadvantages

Advantages

• High performance audio amplification
• Low power consumption
• Compact package size
• Flexible gain control options
• Integrated shutdown mode for power saving

Disadvantages

• Limited output power compared to higher wattage amplifiers
• May require additional external components for specific applications

Working Principles

The LM4911QMM/NOPB is an audio amplifier that operates by amplifying the input audio signal using a combination of internal circuitry and external components. It utilizes a low power supply voltage and advanced design techniques to achieve high-quality audio amplification while consuming minimal power.

The amplifier can be controlled using the gain select pins, allowing users to adjust the amplification level according to their requirements. Additionally, the integrated shutdown mode enables the amplifier to enter a low-power state when not in use, further conserving energy.

Detailed Application Field Plans

The LM4911QMM/NOPB is suitable for a wide range of audio amplification applications, including but not limited to:

1. Portable audio devices such as smartphones, tablets, and MP3 players
2. Headphone amplifiers
3. Bluetooth speakers
4. Home audio systems
5. Automotive audio systems
6. Industrial audio equipment

Alternative Models

Here are some alternative models that offer similar functionality to the LM4911QMM/NOPB:

1. LM4863: Dual 2.2W Audio Amplifier
2. TPA3110D2: 15W Stereo Class-D Audio Power Amplifier
3. MAX9744: 20W Stereo Class D Audio Power Amplifier
4. TDA7265: Dual Bridge Audio Amplifier

These alternative models can be considered based on specific application requirements and design constraints.

In conclusion, the LM4911QMM/NOPB is a high-performance audio amplifier with low power consumption and a compact package size. It offers flexibility in gain control and includes an integrated shutdown mode for power saving. With its wide range of applications and availability of alternative models, it is a versatile choice for audio amplification needs.