LM4881MX/NOPB

Audio Amplifiers Overview

The LM4881MX/NOPB is a dual audio amplifier manufactured by Texas Instruments, formerly National Semiconductor. It provides 200 mW of output power into an 8-ohm load with a supply voltage range of 2.7 V to 5.5 V. The device features a shutdown mode for power conservation and operates within a temperature range of -40°C to +85°C. It utilizes a surface-mount SOIC-8 package.

Audio Amplifiers Feature Summary

• Dual channel configuration designed for stereo headphone applications
• Integrated shutdown mode to minimize current consumption during idle periods
• Class-AB topology for efficient audio signal amplification

Audio Amplifiers Applications

• Portable digital audio players
• Mobile communication devices
• Personal media players

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'MX' indicates the SOIC-8 surface mount package variant. Ensure compliance with RoHS standards as indicated by the NOPB suffix. Cross-reference datasheets for pinout compatibility if replacing legacy components.

Audio Amplifiers Selection Notes

Select this component for low-voltage portable systems requiring stereo amplification. Evaluate the 2.7 V minimum supply requirement against system battery levels. Consider the SOIC-8 footprint constraints during PCB layout. Verify thermal dissipation capabilities for the intended enclosure environment.

Audio Amplifiers Part Context

This part belongs to the LM4881 series of audio amplifiers. It represents the transition from National Semiconductor branding to Texas Instruments following corporate acquisition. The MX suffix specifically denotes the surface-mount SOIC-8 packaging option, distinguishing it from through-hole variants like the N or MM packages.

Audio Amplifiers Replacement Considerations

LM4881M/NOPB

Audio Amplifiers FAQ

What is the function of the shutdown mode?

The shutdown mode reduces the quiescent current significantly, allowing the device to conserve power when not in active use.

Does the MX suffix indicate a different electrical function?

No, the MX suffix only specifies the SOIC-8 surface-mount package type; the electrical characteristics remain identical to other LM4881 variants.