LM4867MTEX/NOPB

Audio Amplifiers Overview

The LM4867MTEX/NOPB is a stereo audio amplifier manufactured by Texas Instruments, formerly National Semiconductor. It operates on a single power supply ranging from 2 V to 5.5 V and delivers 3 W of output power into a 4-ohm load. The device utilizes Class-AB topology with differential input and differential output configurations. Key electrical specifications include a total harmonic distortion plus noise (THD+N) of 0.1% and a power supply rejection ratio (PSRR) of 90 dB. It functions within an operating temperature range of -40°C to +85°C and is housed in a 20-pin HTSSOP package with an exposed pad.

Audio Amplifiers Feature Summary

• Delivers high-fidelity stereo audio amplification with low distortion characteristics suitable for portable consumer electronics.
• Integrates pop-and-click suppression circuitry to minimize audible transients during power-up and power-down sequences.
• Supports flexible input configurations including single-ended to differential conversion via external components.

Audio Amplifiers Applications

• Portable media players and MP3 devices
• Mobile phones and smartphones
• Personal digital assistants (PDAs)

Audio Amplifiers Procurement Notes

Verify the specific suffix 'TEX' against the manufacturer's official documentation to confirm tape-and-reel packaging status. Ensure compatibility with the required thermal dissipation requirements for the HTSSOP-20 package. Cross-reference the RoHS compliance status directly with the current datasheet revision. Confirm that the component meets all environmental regulations applicable to your region before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when a stereo audio solution is required with moderate power output capabilities. It is appropriate for designs utilizing a single 5V or battery-supplied rail. Consider the thermal performance of the exposed pad design for PCB layout optimization. Verify that the 4-ohm load impedance matches the speaker specifications in the target application to ensure optimal power delivery.

Audio Amplifiers Part Context

This part belongs to the LM4866/LM4867 family of audio amplifiers designed for mobile applications. It shares architectural similarities with the LM4866 but offers higher output power. The 'NOPB' suffix indicates lead-free and RoHS-compliant manufacturing. The 'TEX' designation typically refers to the tape-and-reel packaging variant, distinguishing it from tube-packaged versions like the MTE.

Audio Amplifiers Replacement Considerations

• LM4867MTE/NOPB