LM4859

www.ti.com

SNAS256E – MAY 2004 – REVISED MAY 2013

LM4859

Stereo 1.2W Audio Sub-system with 3D

Enhancement

Check for Samples: LM4859

1

FEATURES

KEY SPECIFICATIONS

2

•

Stereo Speaker Amplifier

•

1% THD+N (LM4859SP), 1.6W (Typ)

•

Stereo Headphone Amplifier

•

•

Independent Left, Right, and Mono Volume

1% THD+N, 1.2W (Typ)

Controls

•

•

Texas Instruments 3D Enhancement

1% THD+N, 75mW (typ)

•

•

•

Ultra Low Shutdown Current

1% THD+N, 495mW (typ)

•

Click and Pop Suppression Circuit

•

•

10 Distinct Output Modes

1% THD+N, 33mW (typ)

•

Thermal Shutdown Protection

•

Shutdown Current, 0.06

μA (typ)

•

Available in DSBGA and UQFN packages

DESCRIPTION

APPLICATIONS

The LM4859 is an integrated audio sub-system

designed

for

stereo

cell

phone

applications.

•

Cell Phones

Operating on a 3.3V supply, it combines a stereo

•

PDAs

speaker amplifier delivering 495mW per channel into

•

Portable Gaming Devices

an 8

Ω load and a stereo headphone amplifier

delivering 33mW per channel into a 32

Ω load. It

•

Internet Appliances

integrates the audio amplifiers, volume control, mixer,

•

Portable DVD/CD/AAC/MP3 Players

power management control, and Texas Instruments

3D enhancement all into a single package. In

addition, the LM4859 routes and mixes the stereo

and mono inputs into 10 distinct output modes. The

interface. Other features include an ultra-low current

shutdown mode and thermal shutdown protection.

Boomer

audio

power

amplifiers

are

designed

specifically to provide high quality output power with a

minimal amount of external components.

The LM4859 is available in a 30–bump TL package

and a 28–lead UQFN package.

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2004–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.