LM4946SQX/NOPB

Audio Amplifiers Overview

The LM4946SQX/NOPB is a Texas Instruments audio amplifier featuring a single digital input and two-channel stereo output in a WQFN-24 package. It delivers 1.3W mono or 85mW per channel stereo power into 8-ohm and 32-ohm loads respectively, with a THD+N of 0.08%. Operating on a 2.7V to 5.5V supply, it draws 7.4mA quiescent current. The device supports I²C and SPI interfaces for programmable features including 3D audio processing, depop, mute, and shutdown functions.

Audio Amplifiers Feature Summary

• Integrates TI 3D audio processing capabilities within an output capacitor-less subsystem
• Supports digital control via I²C and SPI interfaces for configuration management
• Includes functional controls such as depop, mute, and shutdown modes

Audio Amplifiers Applications

• Portable digital audio players
• Smartphones and mobile communication devices
• Tablets and handheld gaming consoles

Audio Amplifiers Procurement Notes

Verify the specific suffix 'SQX' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Ensure the component matches the WQFN-24 footprint requirements for your PCB layout. Cross-reference the datasheet revision to confirm interface compatibility.

Audio Amplifiers Selection Notes

Select this component for applications requiring digital input integration without external DACs. Consider the 7.4mA operating current for battery-powered designs. Verify that the WQFN-24 package size fits the available board space. Ensure the system voltage range aligns with the 2.7V to 5.5V operational limits.

Audio Amplifiers Part Context

This part belongs to the LM4946 family of audio amplifiers from Texas Instruments. It is designed as a complete audio subsystem solution. The device integrates digital signal processing features directly into the amplifier stage. It targets compact consumer electronics where space and power efficiency are critical constraints.

Audio Amplifiers Replacement Considerations

Check for LM4946 variants with different packaging options if reel quantities are not required. Verify pin-to-pin compatibility before substituting with other TI audio amplifier models. Ensure any replacement maintains the same digital interface support and power output specifications.