Texas Instruments

LM4922TL/NOPB

LM4922TL/NOPB Description

The LM4922TL/NOPB is a high-performance, Class AB linear amplifier from Texas Instruments, designed to deliver robust audio performance in compact, surface-mount applications. This amplifier is part of the Boomer® series, known for its excellent audio quality and efficiency. The LM4922TL/NOPB provides a maximum output power of 80mW per channel into a 61-ohm load, making it suitable for applications requiring high fidelity and low power consumption.

With a supply voltage range of 1.6V to 4.2V, the LM4922TL/NOPB is highly versatile and can operate efficiently across a wide range of power sources. Its surface-mount package, available in a 14-pin DSBGA format, ensures easy integration into modern electronic designs. The device is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards.

LM4922TL/NOPB Features

The LM4922TL/NOPB boasts several advanced features that enhance its performance and usability:

• Depopulation (Depop): This feature minimizes the pop and click sounds often heard during power-up and power-down, ensuring a seamless audio experience.
• Differential Inputs: The differential input structure provides superior noise rejection and improved signal integrity, making it ideal for noisy environments.
• Shutdown and Standby Modes: These modes allow for significant power savings when the amplifier is not in use, extending battery life in portable applications.
• Thermal Protection: Built-in thermal protection ensures the device remains within safe operating temperatures, preventing damage and extending its lifespan.

LM4922TL/NOPB Applications

The LM4922TL/NOPB is well-suited for a variety of applications, including:

• Portable Audio Devices: Ideal for smartphones, tablets, and other portable devices where space and power efficiency are critical.
• Consumer Electronics: Suitable for audio systems in home entertainment devices, such as smart speakers and soundbars.
• Industrial Applications: Can be used in industrial control panels and monitoring systems where high-quality audio feedback is necessary.

Conclusion of LM4922TL/NOPB

The LM4922TL/NOPB is a versatile and high-performance Class AB linear amplifier that offers a combination of excellent audio quality, low power consumption, and advanced features. Its compact surface-mount package and wide supply voltage range make it suitable for a variety of applications, from portable devices to industrial systems. Despite being marked as obsolete, the LM4922TL/NOPB remains a reliable choice for designers seeking a robust audio solution.