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LM4889LD/NOPB

LM4889LD/NOPB

Product Overview

Category

LM4889LD/NOPB belongs to the category of audio amplifiers.

Use

It is used for amplifying audio signals in various electronic devices such as mobile phones, tablets, and portable media players.

Characteristics

  • High efficiency
  • Low distortion
  • Small package size
  • Low power consumption

Package

The LM4889LD/NOPB comes in a small outline package (SOIC) with 8 pins.

Essence

The essence of LM4889LD/NOPB lies in its ability to provide high-quality audio amplification in a compact and efficient package.

Packaging/Quantity

The LM4889LD/NOPB is typically packaged in reels of 2500 units.

Specifications

  • Power Supply Range: 2.7V to 5.5V
  • Output Power: 1.1W per channel into 8Ω at 5V
  • Total Harmonic Distortion + Noise: 0.2% (typical) at 1kHz, 1.4W, 8Ω
  • Shutdown Current: 0.6μA (typical)

Detailed Pin Configuration

The LM4889LD/NOPB has the following pin configuration: 1. VDD (Power supply) 2. SHUTDOWN (Shutdown control) 3. IN- (Negative input) 4. IN+ (Positive input) 5. GND (Ground) 6. VOUTL (Left channel output) 7. VOUTR (Right channel output) 8. BYPASS (Bypass capacitor connection)

Functional Features

  • Low shutdown current
  • Thermal shutdown protection
  • Short-circuit and thermal overload protection
  • Unity-gain stable

Advantages and Disadvantages

Advantages

  • Small package size
  • Low power consumption
  • High efficiency

Disadvantages

  • Limited output power compared to larger amplifiers
  • Limited features compared to more advanced audio amplifiers

Working Principles

The LM4889LD/NOPB operates by amplifying the input audio signal using internal circuitry and then delivering the amplified signal to the output channels while maintaining low distortion and high efficiency.

Detailed Application Field Plans

The LM4889LD/NOPB is suitable for use in various portable electronic devices, including: - Mobile phones - Tablets - Portable media players - Bluetooth speakers

Detailed and Complete Alternative Models

Some alternative models to LM4889LD/NOPB include: - LM386 - TPA3116D2 - MAX9744

In conclusion, the LM4889LD/NOPB is a compact and efficient audio amplifier suitable for portable electronic devices, offering high-quality audio amplification with low power consumption and small package size.

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技術ソリューションにおける LM4889LD/NOPB の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the LM4889LD/NOPB?

    • The LM4889LD/NOPB is a mono, bridge-tied load (BTL) audio power amplifier with DC volume control.
  2. What is the typical application of LM4889LD/NOPB?

    • It is commonly used in portable audio devices, such as smartphones, tablets, and portable gaming systems.
  3. What is the maximum output power of LM4889LD/NOPB?

    • The LM4889LD/NOPB can deliver up to 1.1W of continuous average power into an 8Ω BTL load with 1% THD+N.
  4. What is the supply voltage range for LM4889LD/NOPB?

    • The supply voltage range for LM4889LD/NOPB is typically 2.7V to 5.5V.
  5. How does the DC volume control work in LM4889LD/NOPB?

    • The DC volume control allows the user to adjust the gain of the amplifier using a simple DC voltage.
  6. What are the key features of LM4889LD/NOPB?

    • Some key features include low quiescent current, shutdown mode, thermal shutdown protection, and short-circuit protection.
  7. Can LM4889LD/NOPB be used in battery-powered devices?

    • Yes, LM4889LD/NOPB's low quiescent current and wide supply voltage range make it suitable for battery-powered applications.
  8. What is the recommended layout for LM4889LD/NOPB?

    • A proper PCB layout with adequate grounding and power supply decoupling is recommended to minimize noise and ensure stable operation.
  9. Does LM4889LD/NOPB require external components for operation?

    • Yes, external components such as input capacitors, feedback resistors, and output capacitors are required for proper operation.
  10. Is there a reference design available for LM4889LD/NOPB?

    • Yes, Texas Instruments provides a reference design and application notes for implementing LM4889LD/NOPB in various technical solutions.