LM4950TSX

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LM4950TSX

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Audio Amplifiers

  • 製造商德州儀器

  • 製造商部分 #LM4950TSX

  • 有存貨10893

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規格

屬性 價值
Packaging Cut Tape
Standard Pack Qty 500

概述

Description

The LM4950TSX is a high-fidelity audio power amplifier integrated circuit (IC) designed for driving small to medium-sized speakers with efficient power output. It typically functions in consumer electronics such as portable audio devices, docking stations, and televisions. The IC is capable of delivering up to 3 watts of continuous average power per channel into a 3-ohm load with less than 10% total harmonic distortion (THD) from a 5V power supply. It features a bridge-tied load (BTL) configuration, which effectively doubles the output power compared to single-ended designs by utilizing both halves of the wave signal.
The LM4950TSX includes several built-in features to enhance performance and safety, such as thermal shutdown protection, short-circuit protection, and pop-and-click suppression to minimize noise during power up and shutdown sequences. It operates over a wide voltage range, making it compatible with various power sources. The IC also offers high PSRR (Power Supply Rejection Ratio), ensuring minimal interference from power supply fluctuations. Its compact packaging and low external component count make it suitable for space-constrained applications.

Equivalent

The LM4950TSX is an audio power amplifier. Equivalent products include:
1. TPA3123D2 by Texas Instruments: A 25W stereo class-D audio amplifier.
2. MAX9744 by Maxim Integrated: A 20W stereo class D amplifier.
3. STA540 by STMicroelectronics: A 4x 10W audio amplifier.
4. TDA7294 by STMicroelectronics: A 100W audio amplifier.
These alternatives offer similar functionalities but may differ in power output and configurations, so it's important to check the specific requirements for compatibility.

Features

The LM4950TSX is a high-performance audio power amplifier primarily used in consumer electronic devices. Key features include:
1. Output Power: It delivers up to 3 watts of continuous average power to a 3Ω load with less than 1% total harmonic distortion (THD) when powered with a 5V supply.
2. Class-AB Amplifier: Operates as a Class-AB amplifier, ensuring high fidelity and efficiency.
3. Thermal Protection: Equipped with thermal shutdown protection to prevent overheating.
4. Short-Circuit Protection: Includes short-circuit protection to enhance device reliability and robustness.
5. Mute Function: Features a mute function that reduces the pop and click noise during power up or shutdown.
6. Low Shutdown Current: Offers a low shutdown current of less than 1µA, aiding in conserving battery life in portable applications.
7. Wide Supply Voltage Range: Operates over a wide supply voltage range from 2V to 5.5V, suitable for various applications.
8. Surface-Mount Package: Available in a compact, thermally efficient surface-mount package, ideal for space-constrained designs.
These features make the LM4950TSX suitable for portable audio devices and other applications requiring efficient power amplification.

Pinout

The LM4950TSX is an audio power amplifier, and it typically comes in a TO-263 package, which is a surface-mount type package. The pin count for the LM4950 in this package is 7 pins. The function of each pin generally includes the following:
1. Input Pins: For audio signal input.
2. Output Pins: For audio signal output to drive a speaker.
3. Supply Voltage Pins: For connecting the power supply to the amplifier.
4. Ground Pins: For grounding the circuit.
5. Standby/Mute Control Pins: For controlling the operational state of the amplifier (standby or mute modes).
6. Feedback and Gain Setting Pins: For configuring the amplifier's gain and stability.
The LM4950TSX is used to amplify audio signals and is typically employed in consumer audio applications like home theater systems or portable audio devices due to its capability to deliver high output power. For precise details about pin configuration and functionality, referring to the manufacturer's datasheet is recommended.

Manufacturer

The LM4950TSX is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits. It is known for its innovation in developing analog and embedded processing products, which are used in a wide range of electronic devices and systems. TI is a leader in the semiconductor industry, providing solutions for industrial, automotive, personal electronics, communications equipment, and enterprise systems.

Application

The LM4950TSX is an audio power amplifier integrated circuit designed for various applications. Its primary use is in audio amplification systems where it can drive speakers in devices such as televisions, radios, and portable audio equipment. It is also suitable for automotive audio systems, providing clear sound output for in-car entertainment. The IC is efficient for use in battery-powered devices, offering low distortion and high-quality sound reproduction. Additionally, it can be used in personal computer audio systems and docking stations where space and power efficiency are crucial. Its versatility and performance make it ideal for any application requiring reliable audio amplification.

Package

The LM4950TSX is a high-power audio amplifier chip typically housed in a TO-263 surface-mount package. This package is designed for efficient heat dissipation, accommodating the device's power requirements while providing a compact form factor suitable for various applications in audio amplification systems.

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