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LM4951SD/NOPB
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LM4951SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High-quality audio amplification - Low power consumption - Small form factor - Wide voltage range operation

Package: SDIP (Shrink Dual In-Line Package)

Essence: The LM4951SD/NOPB is a high-performance audio power amplifier IC designed for various audio applications. It provides excellent sound quality while consuming minimal power.

Packaging/Quantity: The LM4951SD/NOPB is available in a standard SDIP package. Each package contains one IC.

Specifications

The LM4951SD/NOPB has the following specifications:

  • Supply Voltage Range: 2.7V to 5.5V
  • Output Power: Up to 1.1W per channel
  • Total Harmonic Distortion (THD): <0.1%
  • Signal-to-Noise Ratio (SNR): >90dB
  • Shutdown Current: <1µA
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4951SD/NOPB has a total of 16 pins, which are assigned specific functions. The pin configuration is as follows:

  1. VDD: Positive supply voltage
  2. GND: Ground reference
  3. SHUTDOWN: Shutdown control input
  4. BYPASS: Bypass capacitor connection
  5. INL: Left channel audio input
  6. INR: Right channel audio input
  7. VOUTL: Left channel audio output
  8. VOUTR: Right channel audio output
  9. NC: No connection
  10. NC: No connection
  11. NC: No connection
  12. NC: No connection
  13. NC: No connection
  14. NC: No connection
  15. NC: No connection
  16. NC: No connection

Functional Features

The LM4951SD/NOPB offers the following functional features:

  • High-quality audio amplification for stereo applications
  • Low power consumption, making it suitable for portable devices
  • Built-in shutdown control for power-saving operation
  • Bypass capacitor connection for improved audio performance
  • Wide voltage range operation for flexibility in various applications

Advantages and Disadvantages

Advantages: - Excellent sound quality - Low power consumption - Small form factor - Wide voltage range operation

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

Working Principles

The LM4951SD/NOPB operates as a class AB audio power amplifier. It amplifies the audio signal received from the input channels and delivers it to the corresponding output channels. The amplifier ensures high fidelity sound reproduction while minimizing power consumption.

Detailed Application Field Plans

The LM4951SD/NOPB is suitable for a wide range of audio applications, including but not limited to: - Portable audio devices (e.g., MP3 players, smartphones) - Personal computers and laptops - Home entertainment systems - Automotive audio systems - Gaming consoles

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM4951SD/NOPB are: - LM4861: 1.1W Audio Power Amplifier - TPA301: Stereo Class-D Audio Power Amplifier - MAX98357A: Mono Class D Audio Amplifier

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

In conclusion, the LM4951SD/NOPB is a versatile audio power amplifier IC that provides high-quality sound amplification with low power consumption. Its small form factor and wide voltage range operation make it suitable for various audio applications. However, it has limited output power compared to higher wattage amplifiers and requires external components for complete audio system integration.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LM4951SD/NOPB v technických řešeních

  1. Question: What is the typical application of LM4951SD/NOPB?
    Answer: The LM4951SD/NOPB is commonly used as an audio power amplifier in portable devices such as smartphones, tablets, and portable media players.

  2. Question: What is the maximum output power of LM4951SD/NOPB?
    Answer: The LM4951SD/NOPB can deliver up to 3 watts of continuous average power into a 3-ohm load.

  3. Question: What is the input voltage range for LM4951SD/NOPB?
    Answer: The LM4951SD/NOPB has an input voltage range of 2.7V to 5.5V, making it suitable for use with various power sources.

  4. Question: Can LM4951SD/NOPB operate from a single supply?
    Answer: Yes, the LM4951SD/NOPB is designed to operate from a single supply, simplifying its integration into many applications.

  5. Question: Does LM4951SD/NOPB require external compensation?
    Answer: No, the LM4951SD/NOPB includes internal compensation, reducing the need for external components and simplifying the design.

  6. Question: What is the typical efficiency of LM4951SD/NOPB?
    Answer: The typical efficiency of LM4951SD/NOPB is around 85%, making it an energy-efficient choice for battery-powered devices.

  7. Question: Can LM4951SD/NOPB drive low-impedance loads?
    Answer: Yes, the LM4951SD/NOPB is capable of driving low-impedance loads down to 3 ohms, making it suitable for a wide range of speakers.

  8. Question: Is thermal shutdown protection included in LM4951SD/NOPB?
    Answer: Yes, the LM4951SD/NOPB features thermal shutdown protection, ensuring reliable operation under varying conditions.

  9. Question: What is the package type of LM4951SD/NOPB?
    Answer: The LM4951SD/NOPB is available in a small outline package (SOP) for space-constrained applications.

  10. Question: Can LM4951SD/NOPB be used in bridge-tied load (BTL) configuration?
    Answer: Yes, the LM4951SD/NOPB can be configured for bridge-tied load (BTL) operation, providing flexibility in system design.