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LM4675TL/NOPB

LM4675TL/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: TL package (Thin Shrink Small Outline Package)

Essence: The LM4675TL/NOPB is a high-performance audio amplifier IC designed for various audio applications. It provides excellent sound quality while consuming minimal power.

Packaging/Quantity: The LM4675TL/NOPB is available in a TL package and is typically sold in reels containing a specified quantity of units.

Specifications

The LM4675TL/NOPB has the following specifications:

  • Power Supply Voltage Range: 2.7V to 5.5V
  • Output Power: Up to 1.2W per channel
  • Total Harmonic Distortion + Noise (THD+N): <0.1%
  • Signal-to-Noise Ratio (SNR): >90dB
  • Shutdown Current: <1µA
  • Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LM4675TL/NOPB has a total of 20 pins, each serving a specific function. The detailed pin configuration is as follows:

  1. VDD: Power supply voltage input
  2. GND: Ground reference
  3. SD: Shutdown control input
  4. INL: Left channel audio input
  5. INR: Right channel audio input
  6. BYP: Bypass capacitor connection
  7. AGND: Analog ground reference
  8. OUTL: Left channel audio output
  9. OUTR: Right channel audio output
  10. VDD: Power supply voltage input
  11. GND: Ground reference
  12. SD: Shutdown control input
  13. INL: Left channel audio input
  14. INR: Right channel audio input
  15. BYP: Bypass capacitor connection
  16. AGND: Analog ground reference
  17. OUTL: Left channel audio output
  18. OUTR: Right channel audio output
  19. VDD: Power supply voltage input
  20. GND: Ground reference

Functional Features

The LM4675TL/NOPB offers the following functional features:

  • High-quality audio amplification for stereo applications
  • Low power consumption, making it suitable for portable devices
  • Wide operating voltage range allows flexibility in power supply selection
  • Shutdown control for power-saving mode
  • Built-in protection circuitry against short circuits and thermal overload

Advantages and Disadvantages

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

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

Working Principles

The LM4675TL/NOPB operates as a class D audio amplifier, utilizing pulse-width modulation (PWM) techniques to convert the audio signal into a high-frequency square wave. This square wave is then filtered and amplified to produce the desired audio output.

Detailed Application Field Plans

The LM4675TL/NOPB can be used in various audio applications, including but not limited to: - Portable audio devices (e.g., smartphones, tablets, MP3 players) - Bluetooth speakers - Gaming consoles - Automotive audio systems - Home theater systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM4675TL/NOPB include: - LM4863 - TPA3116D2 - MAX98357A

These alternative models provide comparable audio amplification capabilities and can be considered as substitutes for the LM4675TL/NOPB in specific applications.

In conclusion, the LM4675TL/NOPB is a high-performance audio amplifier IC that offers excellent sound quality, low power consumption, and a small form factor. Its wide voltage range operation and built-in protection circuitry make it suitable for various audio applications. However, it has limited output power compared to higher wattage amplifiers and may require additional external components for specific applications.

10个与LM4675TL/NOPB在技术解决方案中的应用相关的常见问题及解答

  1. What is the maximum output power of LM4675TL/NOPB?
    - The maximum output power of LM4675TL/NOPB is 2.8W into 8Ω at 10% THD+N.

  2. What is the input voltage range for LM4675TL/NOPB?
    - The input voltage range for LM4675TL/NOPB is 2.7V to 5.5V.

  3. Can LM4675TL/NOPB operate with a single supply voltage?
    - Yes, LM4675TL/NOPB can operate with a single supply voltage.

  4. What is the typical quiescent current of LM4675TL/NOPB?
    - The typical quiescent current of LM4675TL/NOPB is 2.5mA.

  5. Does LM4675TL/NOPB have built-in thermal shutdown protection?
    - Yes, LM4675TL/NOPB has built-in thermal shutdown protection.

  6. What is the recommended operating temperature range for LM4675TL/NOPB?
    - The recommended operating temperature range for LM4675TL/NOPB is -40°C to 85°C.

  7. Can LM4675TL/NOPB be used in portable audio applications?
    - Yes, LM4675TL/NOPB is suitable for use in portable audio applications.

  8. What is the typical total harmonic distortion plus noise (THD+N) for LM4675TL/NOPB?
    - The typical THD+N for LM4675TL/NOPB is 0.1% at 1W into 8Ω.

  9. Is LM4675TL/NOPB compatible with ceramic capacitors?
    - Yes, LM4675TL/NOPB is compatible with ceramic capacitors.

  10. What is the package type for LM4675TL/NOPB?
    - LM4675TL/NOPB is available in a 20-pin WQFN package.