Texas Instruments
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LM4752TS
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LM4752TS

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High-performance stereo audio amplifier - Designed for use in consumer audio applications - Provides high-quality sound reproduction - Suitable for various audio devices such as home theaters, multimedia systems, and portable speakers

Package: TO-220-15 package

Essence: The LM4752TS is a powerful audio power amplifier that delivers exceptional audio performance and is widely used in consumer electronic products.

Packaging/Quantity: The LM4752TS is typically sold in reels or tubes containing a specified quantity of ICs per package.

Specifications

  • Supply Voltage Range: 10V to 26V
  • Output Power: 30W per channel (at 1% THD+N into 8Ω)
  • Total Harmonic Distortion + Noise (THD+N): 0.03% (typical)
  • Signal-to-Noise Ratio (SNR): 95dB (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4752TS has a total of 15 pins. Here is the detailed pin configuration:

  1. Mute
  2. Input B
  3. Input A
  4. VCC
  5. GND
  6. Output A
  7. Output B
  8. Bootstrap
  9. Feedback A
  10. Feedback B
  11. Gain Select
  12. Thermal Pad
  13. NC (No Connection)
  14. NC (No Connection)
  15. Standby

Functional Features

  • High output power capability
  • Low distortion and noise
  • Wide supply voltage range
  • Built-in thermal shutdown protection
  • Short-circuit and overvoltage protection
  • Mute function for easy control of audio output

Advantages and Disadvantages

Advantages: - High-quality audio reproduction - Versatile application in various consumer audio devices - Robust protection features ensure reliability - Wide supply voltage range allows flexibility in power source selection

Disadvantages: - Requires external components for proper operation - Relatively higher cost compared to lower-powered amplifiers

Working Principles

The LM4752TS operates as a class AB audio power amplifier. It amplifies the input audio signal and delivers it to the connected speakers with high fidelity. The amplifier uses a combination of internal circuitry and external components to achieve low distortion, high output power, and excellent audio performance.

Detailed Application Field Plans

The LM4752TS is commonly used in the following applications:

  1. Home Theater Systems: Provides powerful and immersive audio experience for home entertainment setups.
  2. Multimedia Systems: Enhances the audio output of multimedia devices such as TVs, gaming consoles, and computers.
  3. Portable Speakers: Enables portable audio devices to produce high-quality sound with sufficient volume.

Detailed and Complete Alternative Models

  1. TDA7294: A similar audio power amplifier IC with comparable specifications and performance.
  2. STA540: Another alternative that offers high output power and low distortion for audio applications.
  3. TPA3116D2: A popular choice for audio amplification in various consumer electronic products.

These alternative models can be considered based on specific requirements and design considerations.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LM4752TS i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of LM4752TS in technical solutions:

  1. Q: What is LM4752TS? A: LM4752TS is a dual audio power amplifier integrated circuit (IC) designed for use in audio systems.

  2. Q: What is the maximum output power of LM4752TS? A: The maximum output power of LM4752TS is typically 30 watts per channel into an 8-ohm load.

  3. Q: Can LM4752TS be used in stereo applications? A: Yes, LM4752TS is specifically designed for stereo applications, providing two independent amplifiers in a single package.

  4. Q: What is the supply voltage range for LM4752TS? A: The supply voltage range for LM4752TS is typically ±12V to ±30V.

  5. Q: Is LM4752TS suitable for driving low-impedance speakers? A: Yes, LM4752TS can drive speakers with impedance as low as 4 ohms, making it suitable for a wide range of speaker configurations.

  6. Q: Does LM4752TS have built-in thermal protection? A: Yes, LM4752TS incorporates thermal shutdown protection to prevent damage due to excessive heat.

  7. Q: Can LM4752TS operate in bridge-tied load (BTL) mode? A: Yes, LM4752TS can be configured to operate in BTL mode, which allows for higher output power when driving a single speaker.

  8. Q: Does LM4752TS require external components for operation? A: Yes, LM4752TS requires external components such as resistors, capacitors, and inductors to form a complete audio amplifier circuit.

  9. Q: What is the typical total harmonic distortion (THD) of LM4752TS? A: The typical THD of LM4752TS is less than 0.1% at rated output power.

  10. Q: Is LM4752TS suitable for automotive audio applications? A: No, LM4752TS is not specifically designed for automotive applications and may not meet the required specifications for such use.

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