Texas Instruments
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
LM4906MMX
詳細を表示 DataSheets

LM4906MMX

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Single supply voltage operation - Low quiescent current - High output power capability - Thermal shutdown protection - Short-circuit protection - Small package size

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The LM4906MMX is a high-performance audio amplifier IC designed for portable devices such as smartphones, tablets, and portable media players. It provides high-quality audio amplification with low power consumption.

Packaging/Quantity: The LM4906MMX is available in tape and reel packaging, with 2500 units per reel.

Specifications

  • Supply Voltage Range: 2.7V to 5.5V
  • Quiescent Current: 4mA
  • Output Power: 1.1W (into 8Ω load)
  • Total Harmonic Distortion + Noise (THD+N): 0.1% (at 1kHz, 1W)
  • Shutdown Current: 0.01μA
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4906MMX has the following pin configuration:

  1. IN-
  2. IN+
  3. SHUTDOWN
  4. GND
  5. VDD
  6. BYPASS
  7. OUT
  8. NC

Functional Features

  • Single Supply Operation: The LM4906MMX can operate from a single supply voltage, making it suitable for battery-powered applications.
  • Low Quiescent Current: The IC consumes very low current when idle, helping to extend battery life.
  • High Output Power Capability: With a maximum output power of 1.1W, the LM4906MMX can drive small speakers or headphones effectively.
  • Thermal Shutdown Protection: The IC includes a thermal shutdown feature that protects it from overheating.
  • Short-Circuit Protection: It also incorporates short-circuit protection to prevent damage in case of output short circuits.
  • Small Package Size: The 8-pin SOIC package allows for compact designs in space-constrained applications.

Advantages and Disadvantages

Advantages: - High-quality audio amplification - Low power consumption - Thermal and short-circuit protection - Suitable for portable devices

Disadvantages: - Limited output power compared to larger audio amplifiers - Not suitable for high-power audio applications

Working Principles

The LM4906MMX is a class AB audio amplifier that utilizes a bridge-tied load (BTL) configuration. It amplifies the input audio signal and drives the load (speaker or headphone) with increased power. The IC operates on a single supply voltage, which simplifies the design and reduces component count.

Detailed Application Field Plans

The LM4906MMX is commonly used in various portable electronic devices where audio amplification is required. Some application fields include: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles - Personal digital assistants (PDAs)

Detailed and Complete Alternative Models

  • TPA3110D2: A similar audio amplifier IC with higher output power capability.
  • MAX98357A: An alternative IC with integrated digital audio interface.
  • TDA7052: A low-power audio amplifier IC suitable for battery-powered applications.

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific requirements.

Word Count: 452 words

技術ソリューションにおける LM4906MMX 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。

Sure! Here are 10 common questions and answers related to the application of LM4906MMX in technical solutions:

  1. Q: What is LM4906MMX? A: LM4906MMX is a high-performance audio amplifier integrated circuit (IC) designed for use in various audio applications.

  2. Q: What is the maximum power output of LM4906MMX? A: The maximum power output of LM4906MMX is typically around 1.1 Watts into an 8-ohm load with a 5V power supply.

  3. Q: Can LM4906MMX be used in portable devices? A: Yes, LM4906MMX is suitable for portable devices like smartphones, tablets, portable speakers, etc., due to its low power consumption and small form factor.

  4. Q: Does LM4906MMX require any external components for operation? A: Yes, LM4906MMX requires a few external components such as capacitors, resistors, and input/output coupling capacitors for proper operation.

  5. Q: What is the voltage range required for LM4906MMX? A: LM4906MMX operates within a voltage range of 2.7V to 5.5V, making it compatible with a wide range of power supplies.

  6. Q: Can LM4906MMX drive both headphones and speakers? A: Yes, LM4906MMX can drive both headphones and speakers, making it versatile for different audio output requirements.

  7. Q: Is LM4906MMX capable of driving low-impedance loads? A: Yes, LM4906MMX is designed to drive low-impedance loads down to 4 ohms, making it suitable for various speaker configurations.

  8. Q: Does LM4906MMX have any built-in protection features? A: Yes, LM4906MMX includes built-in thermal shutdown and short-circuit protection to safeguard the IC from damage during fault conditions.

  9. Q: Can LM4906MMX be used in stereo applications? A: Yes, LM4906MMX can be used in stereo applications by using two ICs, one for each channel, to achieve a stereo audio output.

  10. Q: What is the typical gain range of LM4906MMX? A: The typical gain range of LM4906MMX is around 20dB to 40dB, allowing for amplification of audio signals as per the application requirements.

Please note that these answers are general and may vary depending on specific design considerations and application requirements.