Texas Instruments

LM4937RL/NOPB  

Audio Amplifiers

LM4937RL/NOPB Description

The LM4937RL/NOPB is a Class AB mono amplifier from Texas Instruments, part of the Boomer® series, designed to deliver high performance in a compact form factor. This device is capable of providing a maximum output power of 1.25W into an 8Ω load and 80mW into a 32Ω load, making it suitable for applications requiring efficient power delivery to speakers. The LM4937RL/NOPB operates within a supply voltage range of 2.7V to 5.5V, ensuring flexibility in power supply options.

This amplifier is housed in a 36DSBGA package and is available in a Tape & Reel (TR) format, ideal for surface mount applications. It is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. With a moisture sensitivity level (MSL) of 1 (Unlimited), the LM4937RL/NOPB is suitable for various manufacturing environments.

LM4937RL/NOPB Features

The LM4937RL/NOPB offers a comprehensive set of features that enhance its functionality and versatility. Key features include:

• Depopulation (Depop): Reduces the risk of pop noise during power-up and power-down cycles.
• Differential Inputs: Enhances signal integrity and reduces noise susceptibility.
• Digital Control Interfaces: Supports I2C and SPI protocols, allowing for flexible control options.
• I2S Compatibility: Enables seamless integration with digital audio systems.
• Mute and Shutdown Functions: Provides control over audio output and power consumption.
• Volume Control: Allows dynamic adjustment of audio levels.
• Low Power Consumption: Optimized for energy efficiency in battery-powered devices.

These features collectively offer significant advantages over similar models, making the LM4937RL/NOPB a robust choice for demanding audio applications.

LM4937RL/NOPB Applications

The LM4937RL/NOPB is well-suited for a variety of applications where high-quality audio output and efficient power management are critical. Specific use cases include:

• Portable Audio Devices: Ideal for smartphones, tablets, and portable media players where space and power efficiency are paramount.
• Wearable Technology: Suitable for smartwatches and fitness trackers that require compact and efficient audio solutions.
• Home and Office Audio Systems: Can be used in compact speaker systems and soundbars for enhanced audio performance.
• Automotive Applications: Fits well in car audio systems where reliable power delivery and low noise are essential.

The LM4937RL/NOPB's combination of high output power, low power consumption, and advanced control features make it a versatile component for a wide range of audio applications.

Conclusion of LM4937RL/NOPB

In summary, the LM4937RL/NOPB from Texas Instruments is a high-performance Class AB mono amplifier that delivers exceptional audio quality and efficiency. Its robust feature set, including differential inputs, digital control interfaces, and volume control, makes it a standout choice in the market. While the product is marked as obsolete, it remains a reliable option for applications requiring a compact, efficient, and high-quality audio solution. The LM4937RL/NOPB's compliance with environmental and safety standards further solidifies its position as a responsible and sustainable choice for electronic designs.

LM4937RL/NOPB Documents

Download datasheets and manufacturer documentation for LM4937RL/NOPB

Datasheets :

LM4937      

PCN Obsolescence/ EOL :

Mult Dev EOL 03/Jun/2020