Texas Instruments

LM4922TLX/NOPB

LM4922TLX/NOPB Description

The LM4922TLX/NOPB is a high-performance, Class AB linear amplifier from the Boomer® series, designed by Texas Instruments. This IC is optimized for applications requiring high audio quality and low power consumption. It features a maximum output power of 80mW per channel at a 16-ohm load, making it suitable for driving small speakers and headphones. The LM4922TLX/NOPB operates over a wide supply voltage range of 1.6V to 4.2V, providing flexibility in power supply design.

LM4922TLX/NOPB Features

• Class AB Amplifier: Delivers high audio quality with low distortion and high efficiency.
• Differential Inputs: Enhances signal integrity and reduces noise, making it ideal for high-fidelity audio applications.
• Shutdown Mode: Reduces power consumption to a minimum when not in use, extending battery life in portable devices.
• Thermal Protection: Prevents damage due to overheating, ensuring reliable operation under various conditions.
• Depop Feature: Minimizes unwanted noise during power-up and power-down cycles.
• Surface Mount Technology: The LM4922TLX/NOPB is available in a 14-lead DSBGA package, suitable for compact and high-density PCB designs.
• Compliance and Safety: The device is REACH unaffected and RoHS3 compliant, meeting stringent environmental and safety standards.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited) ensures the IC is suitable for a wide range of manufacturing environments without additional moisture protection.

LM4922TLX/NOPB Applications

The LM4922TLX/NOPB is ideal for a variety of applications where high audio quality and low power consumption are critical. Its compact size and surface mount package make it suitable for space-constrained designs. Key applications include:

• Portable Audio Devices: Such as MP3 players, smartphones, and tablets.
• Headphone Amplifiers: Providing high-quality audio output for headphones.
• Small-Speaker Systems: Ideal for compact speaker systems in consumer electronics.
• Battery-Powered Devices: Benefiting from its low power consumption and wide supply voltage range.

Conclusion of LM4922TLX/NOPB

The LM4922TLX/NOPB from Texas Instruments is a versatile and high-performance Class AB linear amplifier. Its combination of high audio quality, low power consumption, and advanced features such as differential inputs and thermal protection make it a standout choice for a wide range of audio applications. Despite being marked as obsolete, the LM4922TLX/NOPB remains a reliable and efficient solution for designers seeking to integrate high-fidelity audio into their products.