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LM4864MM
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LM4864MM

Product Overview

Category: Audio Amplifier
Use: LM4864MM is a dual audio power amplifier designed for use in portable electronic devices.
Characteristics: The LM4864MM is known for its low power consumption, small package size, and high efficiency. It is available in a miniature 14-pin surface mount package.
Package: Miniature 14-pin surface mount package
Essence: The LM4864MM is essential for providing high-quality audio amplification in portable electronic devices.
Packaging/Quantity: Available in reels of 2500 units.

Specifications

  • Output Power: 1.1W per channel into 8Ω at 5V
  • Total Harmonic Distortion (THD): 0.2% (typical) at 1kHz, 1.2W, 8Ω
  • Shutdown Current: 0.6μA (typical)
  • Supply Voltage Range: 2V to 5.5V
  • Quiescent Current: 4mA (typical)

Detailed Pin Configuration

The LM4864MM has a 14-pin configuration with the following pin functions: 1. Shutdown 2. Input B- 3. Input B+ 4. Gain Control 5. Output B 6. V- 7. V+ 8. Output A 9. Gain Control 10. Input A+ 11. Input A- 12. GND 13. Bypass 14. Bypass

Functional Features

  • Dual audio power amplifier
  • Low power consumption
  • Thermal shutdown protection
  • Unity-gain stable
  • External gain configuration capability

Advantages and Disadvantages

Advantages: - Small package size - High efficiency - Low quiescent current - Thermal shutdown protection

Disadvantages: - Limited output power compared to larger amplifiers - Requires external gain configuration

Working Principles

The LM4864MM operates by amplifying the input audio signals and delivering them to the connected speakers while maintaining low power consumption and high efficiency. It utilizes thermal shutdown protection to prevent damage from excessive heat and can be configured externally for different gain levels.

Detailed Application Field Plans

The LM4864MM is ideal for use in various portable electronic devices such as: - Mobile phones - Portable media players - Bluetooth speakers - Handheld gaming devices

Detailed and Complete Alternative Models

Some alternative models to LM4864MM include: - TPA2012D2 from Texas Instruments - MAX98306 from Maxim Integrated - NJU7088 from New Japan Radio

This completes the entry for LM4864MM, covering its product overview, specifications, pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LM4864MM i tekniske løsninger

  1. What is the LM4864MM?

    • The LM4864MM is a dual audio power amplifier designed for use in portable electronic devices.

  2. What is the maximum output power of the LM4864MM?

    • The LM4864MM can deliver up to 750mW per channel into an 8Ω load with a 5V power supply.

  3. What is the typical voltage supply range for the LM4864MM?

    • The LM4864MM operates within a voltage supply range of 2.7V to 5.5V.

  4. What are the key features of the LM4864MM?

    • The LM4864MM features low quiescent current, shutdown mode, thermal shutdown protection, and unity-gain stable.

  5. What types of applications is the LM4864MM suitable for?

    • The LM4864MM is suitable for use in portable electronic devices such as smartphones, tablets, and portable media players.

  6. What is the input impedance of the LM4864MM?

    • The input impedance of the LM4864MM is typically 40kΩ.

  7. Does the LM4864MM require external compensation?

    • No, the LM4864MM is unity-gain stable and does not require external compensation.

  8. What is the typical total harmonic distortion (THD) of the LM4864MM?

    • The typical THD of the LM4864MM is 0.1% at 1kHz and 10% of the rated output power.

  9. Can the LM4864MM be used in bridge-tied load (BTL) configuration?

    • Yes, the LM4864MM can be used in BTL configuration to drive a single speaker with increased output power.

  10. What is the recommended layout and heat sinking for the LM4864MM?

    • It is recommended to follow the layout guidelines provided in the datasheet and to ensure adequate heat sinking for optimal performance and reliability.