LM4854 - 1.9W Monaural / 85mW Stereo Headphone Audio Amplifier

National Semiconductor (now Texas Instruments)

Datasheet Details

Part number	LM4854
Manufacturer	National Semiconductor (now Texas Instruments)
File Size	1.41 MB
Description	1.9W Monaural / 85mW Stereo Headphone Audio Amplifier
Datasheet	LM4854 Datasheet

General Description

The unity-gain stable LM4854 is both a mono differential output (for bridge-tied loads, or BTL) audio power amplifier and a single-ended (SE) stereo headphone amplifier.

Operating on a single 5V supply, the mono BTL mode delivers 1.1W (typ) to an 8Ω load, 1.7W (typ) to a 4Ω load (Note 1) at 1% THD+N.

In SE stereo mode, the amplifier will deliver 85mW to 32Ω loads.

Overview

LM4854 1.9W Monaural, 85mW Stereo Headphone Audio Amplifier April 2003 LM4854 1.

Key Features

a new circuit topology that suppresses output transients (’click and pops’) and eliminates SE-mode output coupling capacitors, saving both component and board space costs. The LM4854 has three inputs: one pair for a two-channel stereo signal and the third for a single-channel mono input. The LM4854 is designed for PDA, cellular telephone, notebook, and other handheld portable.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number	Description
LM4850	Mono 1.5W / Stereo 300mW Power Amplifier
LM4851	Integrated Audio Amplifier
LM48510	boosted class D audio power amplifier
LM48511	Class D Audio Power Amplifier
LM4852	Integrated Audio Amplifier
LM48520	Boosted Stereo Class D Audio Power Amplifier
LM4853	Mono 1.5W / Stereo 300mW Power Amplifier
LM4855	Boomer AUDIO POWER AMPLIFIER
LM48555	Ceramic Speaker Driver
LM48556	Ceramic Speaker Driver