LM4894ITP/NOPB

Audio Amplifiers Overview

The LM4894ITP/NOPB is a Class AB mono audio power amplifier manufactured by Texas Instruments. It delivers 1.4 W of continuous output power into a 4-ohm load with less than 0.2% total harmonic distortion plus noise (THD+N). The device operates on a single supply voltage ranging from 2.2 V to 5.5 V and draws a typical quiescent current of 6 mA. It features differential inputs, integrated depop circuitry for pop-and-click suppression, thermal shutdown protection, and a small 9-UFBGA package suitable for portable applications.

Audio Amplifiers Feature Summary

• Integrates differential input stage for improved noise immunity in mobile environments
• Includes internal depop circuitry to eliminate audible switching transients during power-up and power-down
• Provides thermal shutdown protection to safeguard the device under fault conditions

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Ensure storage conditions adhere to moisture sensitivity level requirements specified in the datasheet. Validate part marking against official silkscreen standards to prevent counterfeit infiltration.

Audio Amplifiers Selection Notes

Select this component when designing low-voltage mono audio systems requiring high efficiency and minimal external components. The differential input capability makes it suitable for noisy digital environments common in handheld devices. Consider the 9-UFBGA package constraints for PCB layout and thermal management requirements compared to larger packages.

Audio Amplifiers Part Context

This part belongs to the LM4894 family of audio amplifiers from Texas Instruments. It is designed specifically for battery-powered consumer electronics where space and power consumption are critical constraints. The Boomer series designation indicates its focus on high performance in small form factors.

Audio Amplifiers Replacement Considerations

LM4894ITX/NOPB: Pin-compatible alternative in SOIC-8 package.