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LM4881N/NOPB
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LM4881N/NOPB

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Audio Amplifier
  • Characteristics: Low voltage, low power consumption, high output power
  • Package: DIP-8 (Dual In-Line Package with 8 pins)
  • Essence: LM4881N/NOPB is a mono audio amplifier IC designed for low voltage applications. It provides high-quality audio amplification with low power consumption.
  • Packaging/Quantity: Available in tubes or reels, quantity depends on the supplier

Specifications

  • Power Supply Voltage: 2.5V to 5.5V
  • Output Power: Up to 1W
  • Total Harmonic Distortion (THD): Less than 0.5%
  • Shutdown Current: Less than 0.01μA
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4881N/NOPB IC has the following pin configuration:

____ IN+ | | OUT+ IN- | | GND VCC | | BYPASS SHDN| | NC OUT-| | IN- ______|____|

Functional Features

  • Low voltage operation allows for use in battery-powered devices
  • Low power consumption extends battery life
  • High output power enables driving small speakers or headphones
  • Shutdown mode reduces power consumption when not in use
  • Bypass pin allows for external filtering to improve audio quality

Advantages and Disadvantages

Advantages: - Suitable for low voltage applications - Compact package size - High-quality audio amplification - Low power consumption

Disadvantages: - Limited output power compared to higher voltage amplifiers - Requires external filtering for optimal audio quality

Working Principles

The LM4881N/NOPB is a class AB audio amplifier IC. It amplifies the input audio signal and provides an amplified output to drive speakers or headphones. The low voltage operation allows it to be used in portable devices, while the low power consumption ensures efficient battery usage.

Application Field Plans

The LM4881N/NOPB can be used in various applications, including: - Portable audio devices - Mobile phones - Tablets - Personal computers - Gaming consoles

Alternative Models

  • LM4882N/NOPB: Similar specifications, but with stereo output capability
  • LM4861N/NOPB: Lower output power, suitable for lower power applications
  • LM386N-4/NOPB: Higher output power, suitable for larger speakers

These alternative models provide different features and capabilities to suit specific application requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan LM4881N/NOPB dalam solusi teknis

  1. What is the LM4881N/NOPB?

    • The LM4881N/NOPB is a mono, bridge-tied load (BTL) audio power amplifier designed for use in low-voltage consumer applications.

  2. What is the typical supply voltage range for the LM4881N/NOPB?

    • The typical supply voltage range for the LM4881N/NOPB is 2.7V to 5.5V.

  3. What is the output power capability of the LM4881N/NOPB?

    • The LM4881N/NOPB can deliver up to 1W of continuous average power into an 8Ω BTL load with less than 1% total harmonic distortion (THD).

  4. What are the key features of the LM4881N/NOPB?

    • The key features of the LM4881N/NOPB include low quiescent current, shutdown mode, thermal shutdown protection, and short-circuit protection.

  5. How does the shutdown mode work in the LM4881N/NOPB?

    • The shutdown mode of the LM4881N/NOPB reduces the supply current to less than 0.01µA when the shutdown pin is pulled low.

  6. What is the recommended application circuit for the LM4881N/NOPB?

    • The recommended application circuit for the LM4881N/NOPB includes input coupling capacitors, feedback resistors, and output decoupling capacitors.

  7. Can the LM4881N/NOPB be used in portable audio devices?

    • Yes, the LM4881N/NOPB is suitable for use in portable audio devices due to its low supply voltage and low quiescent current.

  8. What is the maximum junction temperature of the LM4881N/NOPB?

    • The maximum junction temperature of the LM4881N/NOPB is 150°C.

  9. Does the LM4881N/NOPB require external bootstrap capacitors?

    • No, the LM4881N/NOPB does not require external bootstrap capacitors for operation.

  10. Is the LM4881N/NOPB available in a surface-mount package?

    • Yes, the LM4881N/NOPB is available in a surface-mount DSBGA package for space-constrained applications.