LM4860MX-NS

Audio Amplifiers Overview

The LM4860MX/NOPB is a single-channel mono Class-AB audio amplifier manufactured by Texas Instruments, formerly National Semiconductor. It delivers 1.15 W of output power into an 8 Ohm load with a THD+N of 0.72%. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and draws a quiescent current of 7 mA. It accepts analog input signals and is housed in a SOIC-Narrow-16 package suitable for surface mount technology. The operational temperature range spans from -20°C to +85°C.

Audio Amplifiers Feature Summary

• Class-AB topology for high-fidelity audio reproduction
• Single-supply operation capability
• Low quiescent current consumption
• Analog input interface

Audio Amplifiers Applications

• Portable audio devices
• Personal entertainment systems
• Small speaker amplification circuits

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix NOPB indicates RoHS compliance and lead-free construction. Ensure the package type matches the required SOIC-Narrow-16 footprint for PCB layout compatibility. Cross-reference the part number against official datasheets to confirm electrical specifications match design requirements.

Audio Amplifiers Selection Notes

Select this component when a low-power, single-channel mono amplifier is required for battery-operated applications. The Class-AB architecture offers a balance between efficiency and sound quality. Consider the 2.7 V to 5.5 V operating range to ensure compatibility with the system's power supply rails. Verify that the 1.15 W output power meets the acoustic requirements of the connected 8 Ohm load.

Audio Amplifiers Part Context

This component belongs to the LM4860 series of audio amplifiers. It represents the transition period where National Semiconductor products were integrated into Texas Instruments' portfolio. The MX suffix denotes the tape and reel packaging variant, while M indicates tube packaging. The NOPB suffix confirms environmental compliance standards.

Audio Amplifiers Replacement Considerations

LM4860M/NOPB is a verified equivalent offering identical electrical characteristics but packaged in tubes instead of reels.