LM4906GR

Audio Amplifiers Overview

The LM4906GR is a single-channel Class-AB audio power amplifier from the Boomer series, manufactured by Texas Instruments (formerly National Semiconductor). It delivers 1W of output power into an 8-ohm load with a total harmonic distortion plus noise of 0.2%. The device operates on a single supply voltage ranging from 2.6V to 5.5V and draws a quiescent current of 4mA. Designed for portable communication devices, it utilizes a BGA package measuring 2.5x5.5mm and functions within a temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Eliminates the need for external bypass capacitors to reduce component count and PCB area
• Integrates selectable internal gain settings for flexible system design
• Optimized for low-power operation in battery-driven mobile applications

Audio Amplifiers Applications

• Standard mobile phones
• Portable communication devices
• Low-cost audio subsystems in consumer electronics

Audio Amplifiers Procurement Notes

Verify the manufacturer designation carefully, as the part was originally developed by National Semiconductor and is now produced by Texas Instruments. Confirm the specific suffix 'GR' corresponds to the required BGA package variant. Ensure compliance with RoHS directives if applicable to your region. Cross-reference the datasheet revision date to confirm technical specifications match your design requirements before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when minimizing external passive components is critical for board space constraints. It is suitable for mono audio outputs requiring moderate power levels. Consider the single-supply architecture and internal gain options during schematic design. Evaluate thermal performance within the specified operating temperature range for enclosed portable enclosures.

Audio Amplifiers Part Context

This amplifier belongs to the Boomer series, which focuses on cost-effective solutions for the mass market. It represents a transition from discrete audio solutions to integrated mono amplifiers. The LM4906GR specifically targets entry-level mobile handsets where bill-of-materials costs must be minimized while maintaining acceptable audio fidelity standards.

Audio Amplifiers Replacement Considerations

The LM4906MM/NOPB serves as a pin-compatible alternative in a VSSOP-8 package. Verify package dimensions and thermal characteristics differ between BGA and VSSOP variants. Ensure electrical parameters remain identical for direct substitution in existing designs.