LM49352 datasheet(62/106 Pages) TI

Part #	LM49352

Description	Boomer Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers, Earpiece Driver, and Audio DSP

PDF	106 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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62 / 106 page

Audio

Input

ALC

Output

with

Limiter

Enabled

TARGET

ALC

Output

with

Limiter

Disabled

TARGET

LM49352

SNAS467E – MARCH 2009 – REVISED MARCH 2013

www.ti.com

The ALC limiter’s target level can also be set for a predetermined maximum output power or voltage level. This

method of ALC limiter operation is known as “power limit” mode. Operating the ALC limiter in “power limit” mode

prevents the speaker or headphone from playing at unsafe hearing levels that can permanently damage the end

user’s ears. “Power limit” operation is especially useful for applications such as listening to music through a set of

headphones. Another benefit of using the ALC limit in “power limit” mode is to extend battery life by reducing

power consumption of the output amplifiers during audio playback.

Figure 69. ALC Limiter

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LM49352 Datasheet(PDF) 62 Page - Texas Instruments