LM4928SDX/NOPB

Audio Amplifiers Overview

The LM4928SDX/NOPB is a stereo audio power amplifier from the Texas Instruments Boomer series. It delivers 1.2 watts of output power into a 4-ohm load, operating on a single supply voltage ranging from 5 volts to 16 volts. The device utilizes a fully differential architecture to minimize radio frequency interference and reduce external component count. Key electrical characteristics include a low total harmonic distortion plus noise of 0.15 percent at 1 watt output. It features integrated thermal overload protection and short-circuit current limiting for robust operation in mobile applications.

Audio Amplifiers Feature Summary

• Fully differential topology reduces electromagnetic interference and simplifies board layout by eliminating large coupling capacitors.
• Integrated RF suppression filters prevent radio frequency interference from affecting audio performance.
• Built-in thermal shutdown and short-circuit protection ensure device reliability under fault conditions.

Audio Amplifiers Applications

• Portable media players
• Mobile phones
• Personal digital assistants

Audio Amplifiers Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free compliance and RoHS status as per the manufacturer's datasheet. Confirm package type LLF-10 matches design requirements. Check current production status as older revisions may be discontinued or subject to last-time buy notices. Ensure ESD handling protocols are followed during assembly.

Audio Amplifiers Selection Notes

Select this component when a stereo solution with high efficiency and minimal external components is required. The fully differential input allows direct connection to single-ended sources via simple resistor networks. Consider the 16-volt maximum supply rating for compatibility with battery-powered systems. Verify that the 1.2-watt output capability meets the speaker impedance and volume requirements of the target application.

Audio Amplifiers Part Context

This part belongs to the LM4928 family of Boomer audio amplifiers designed for portable electronics. It replaces earlier versions like the LM4928SD/NOPB with updated manufacturing processes. The SDX variant indicates a tape-and-reel packaging format suitable for automated surface-mount assembly. It is distinct from mono amplifiers in the same series due to its dual-channel configuration.

Audio Amplifiers Replacement Considerations

Direct pin-to-pin replacements within the same package should be verified against the latest datasheet. Cross-reference with other LM4928 variants such as LM4928SD/NOPB for functional equivalence. Ensure any substitute maintains the 1.2-watt output capability and fully differential architecture.