LM4982TLX/NOPB

Audio Amplifiers Overview

The LM4982TLX/NOPB is a stereo audio power amplifier delivering 80mW into a 16Ω load from a 3V supply. It features ground-referenced outputs and an internal charge pump to eliminate output coupling capacitors. The device supports I2C volume control with gain settings ranging from +18dB to -76dB. IntelliSense technology detects mono or stereo headphone insertion, automatically adjusting channel operation. Operating voltage ranges from 1.6V to 4.0V, with a typical shutdown current of 0.1µA.

Audio Amplifiers Feature Summary

• Ground-referenced outputs utilizing an internal charge pump to remove the need for external DC blocking capacitors.
• I2C-compatible interface providing digital volume control across 32 selectable gain steps.
• IntelliSense circuitry that identifies headphone impedance to prevent damage from mono plug insertion.
• Advanced pop and click suppression circuitry eliminates audible transients during power transitions.

Audio Amplifiers Applications

• Notebook PCs
• Mobile Phones
• MP3 Players

Audio Amplifiers Procurement Notes

Verify the specific suffix TLX indicates tape and reel packaging when sourcing components. Confirm the NOPB designation ensures compliance with RoHS standards and absence of lead-based materials. Cross-reference the manufacturer part number against official datasheets to ensure correct package identification and electrical specifications before integration.

Audio Amplifiers Selection Notes

Select this component for low-voltage portable systems requiring minimal external passive components. The integrated charge pump simplifies board layout by removing large coupling capacitors. Ensure the application logic supports the I2C protocol for volume adjustment. Verify that the target headphone impedance meets the minimum threshold for reliable IntelliSense detection.

Audio Amplifiers Part Context

This device belongs to the Boomer audio power amplifier series designed for high-quality output with minimal external circuitry. It targets mobile electronics where space constraints and battery efficiency are critical design parameters. The architecture focuses on reducing bill-of-materials costs through the elimination of bootstrap networks and snubber circuits typically found in similar amplifiers.

Audio Amplifiers Replacement Considerations

Consult official substitution guides for compatible alternatives within the same product family. Verify pinout compatibility and electrical parameter alignment before replacing existing designs.