Texas Instruments
Imej mungkin representasi.
Lihat spesifikasi untuk butiran produk.
LM4919MM/NOPB
Lihat Butiran Helaian data

LM4919MM/NOPB

Product Overview

Category

LM4919MM/NOPB belongs to the category of audio amplifiers.

Use

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

Characteristics

  • High-quality audio amplification
  • Low power consumption
  • Small form factor
  • Integrated volume control

Package

The LM4919MM/NOPB comes in a miniature 10-pin MSOP package.

Essence

The essence of LM4919MM/NOPB lies in its ability to provide high-fidelity audio amplification in a compact and efficient package.

Packaging/Quantity

The LM4919MM/NOPB is typically available in reels with a quantity of 2500 units per reel.

Specifications

  • Power Supply Voltage: 2.7V to 5.5V
  • Output Power: 1.1W at 3.6V, 10% THD+N, 8Ω Load
  • Shutdown Current: 0.01μA (Typical)
  • Signal-to-Noise Ratio (SNR): 95dB (Typical)

Detailed Pin Configuration

  1. SHDN (Pin 1) - Shutdown Pin
  2. INP (Pin 2) - Non-Inverting Input
  3. INN (Pin 3) - Inverting Input
  4. VDD (Pin 4) - Power Supply Voltage
  5. GND (Pin 5) - Ground
  6. BYP (Pin 6) - Bypass Capacitor Connection
  7. OUT (Pin 7) - Amplifier Output
  8. VREF (Pin 8) - Reference Voltage
  9. VOLUME (Pin 9) - Volume Control
  10. VDD (Pin 10) - Power Supply Voltage

Functional Features

  • Integrated shutdown control
  • Low-power consumption
  • Thermal shutdown protection
  • Short-circuit and overvoltage protection

Advantages and Disadvantages

Advantages

  • Compact size
  • High-quality audio amplification
  • Low power consumption

Disadvantages

  • Limited output power compared to larger amplifiers
  • Limited voltage range

Working Principles

The LM4919MM/NOPB operates as a class AB audio amplifier, utilizing a bridge-tied load (BTL) configuration to efficiently drive speakers or headphones. It incorporates internal gain settings and volume control to provide a complete audio amplification solution.

Detailed Application Field Plans

The LM4919MM/NOPB is well-suited for use in portable electronic devices such as smartphones, tablets, portable media players, and Bluetooth speakers. Its low power consumption and small form factor make it ideal for battery-powered applications where space and energy efficiency are critical.

Detailed and Complete Alternative Models

  • TPA2012D2 from Texas Instruments
  • MAX98306 from Maxim Integrated
  • PAM8403 from Diodes Incorporated

This completes the English editing encyclopedia entry structure format for LM4919MM/NOPB.

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi LM4919MM/NOPB dalam penyelesaian teknikal

  1. What is the LM4919MM/NOPB?

    • The LM4919MM/NOPB is a mono, bridged audio power amplifier designed for use in portable electronic devices.

  2. What is the typical application of the LM4919MM/NOPB?

    • The LM4919MM/NOPB is commonly used in mobile phones, PDAs, and other portable communication devices to drive the speaker or earpiece.

  3. What is the maximum output power of the LM4919MM/NOPB?

    • The LM4919MM/NOPB can deliver up to 1.1W of continuous average power into an 8Ω load.

  4. What is the supply voltage range for the LM4919MM/NOPB?

    • The LM4919MM/NOPB operates from a single 2.7V to 5.5V supply.

  5. Does the LM4919MM/NOPB require external compensation?

    • No, the LM4919MM/NOPB does not require external compensation, which simplifies design and reduces component count.

  6. What protection features does the LM4919MM/NOPB have?

    • The LM4919MM/NOPB includes thermal shutdown and output short-circuit protection.

  7. Can the LM4919MM/NOPB be used in battery-powered applications?

    • Yes, the LM4919MM/NOPB's low supply current and wide supply voltage range make it suitable for battery-powered applications.

  8. What is the typical efficiency of the LM4919MM/NOPB?

    • The LM4919MM/NOPB has a typical efficiency of 85% at 300mW into an 8Ω load.

  9. Is the LM4919MM/NOPB available in a small package for space-constrained designs?

    • Yes, the LM4919MM/NOPB is available in a space-saving 8-pin MSOP package.

  10. What are the key advantages of using the LM4919MM/NOPB in technical solutions?

    • The LM4919MM/NOPB offers high efficiency, low supply current, small package size, and integrated protection features, making it ideal for portable audio applications.