LM4938MHX

$0.54

Description：VOLUME CONTROL CIRCUIT, 2 CHANNE
Series：Boomer®
Mfr：National Semiconductor
Package：Bulk

SKU:3d9754bd7d0d Category: Audio Amplifiers Brand: National Semiconductor

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Product introduction

LM4938MHX is listed in the Audio Amplifiers range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is VOLUME CONTROL CIRCUIT, 2 CHANNE. Review the specifications below when checking this part for your BOM.

Audio Amplifiers specifications for LM4938MHX

Description：VOLUME CONTROL CIRCUIT, 2 CHANNE
Series：Boomer®
Mfr：National Semiconductor
Package：Bulk
Type：Class AB
Output Type：2-Channel (Stereo) with Stereo Headphones
Max Output Power x Channels @ Load：2.2W x 2 @ 3Ohm
Voltage - Supply：2.7V ~ 5.5V
Features：-
Mounting Type：Surface Mount
Supplier Device Package：28-HTSSOP
Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature：-20°C ~ 85°C (TA)
Grade：-
Qualification：-

Audio Amplifiers datasheet and documents for LM4938MHX

LM4938MHX

Audio Amplifiers Overview

The LM4938MHX is a stereo Class-AB audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It delivers up to 2W of output power and features integrated DC volume control with selectable gain settings. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical specifications include a quiescent current of 11mA, total harmonic distortion plus noise of 0.05% to 0.065%, and an operating temperature range from -20°C to +85°C. It is housed in an HTSSOP-28 package.

Audio Amplifiers Feature Summary

Integrates digital-controlled volume adjustment for system-level simplification
Provides selectable gain options to accommodate various input signal levels
Operates efficiently on low single-supply voltages suitable for portable devices

Audio Amplifiers Applications

Portable media players
Mobile phones
Personal digital assistants

Audio Amplifiers Procurement Notes

Verify the specific suffix 'MHX' against the manufacturer's official documentation to confirm tape-and-reel packaging status. Ensure compatibility with the HTSSOP-28 footprint during PCB layout. Cross-reference the datasheet revision history to validate thermal performance claims under actual load conditions before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when a compact stereo amplifier with built-in volume management is required. It is suitable for designs needing high efficiency and low power consumption in battery-operated environments. Verify that the available supply voltage aligns with the 2.7V to 5.5V operational range specified in the technical data.

Audio Amplifiers Part Context

This part belongs to the LM4938 series of audio subsystems designed for consumer electronics. It succeeds earlier models like the LM4835 and LM4838, offering enhanced integration through digital volume control. The series targets applications requiring small form factors and simplified external component counts.