LM4841LQ/NOPB

Audio Amplifiers Overview

The LM4841LQ/NOPB is a stereo audio power amplifier manufactured by National Semiconductor. It delivers 2W of continuous output power into a 4-ohm load with a supply voltage ranging from 2.7V to 5.5V. The device features digital volume control, selectable gain settings, and transient-free outputs for capless headphone drive capability. It operates within an ambient temperature range of -40°C to +85°C and is housed in a 24-pin QCC package.

Audio Amplifiers Feature Summary

• Stereo 2W audio power amplification with integrated digital volume control
• Capless headphone drive capability with transient-free outputs
• Selectable gain configurations for flexible system integration

Audio Amplifiers Applications

• Portable media players
• Mobile phones
• Personal digital assistants

Audio Amplifiers Procurement Notes

Verify the specific suffix LQ against the official datasheet to confirm the package type and temperature rating. Ensure compatibility with the host system's I2C interface for volume control. Confirm that the 24-pin QCC package matches the PCB footprint requirements. Validate supply voltage ranges against the application's power rails.

Audio Amplifiers Selection Notes

Select this component when a compact stereo amplifier with digital control is required for battery-powered devices. The capless design reduces external component count compared to traditional coupling capacitor solutions. Consider the thermal performance in enclosed spaces due to the high power density in the small package.

Audio Amplifiers Part Context

This part belongs to the LM484x series of audio amplifiers from National Semiconductor, now part of Texas Instruments. The series focuses on low-power, high-efficiency audio solutions for portable consumer electronics. The LM4841 variant specifically adds digital volume control and input multiplexing capabilities compared to basic amplifier models.