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LM4835 Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain


source: | post time:2010-03-22

Part Number(s)
(NSID)
Top View Type Pins MSL Rating Peak Reflow RoHS
Status
CAD Symbols Models Package
Marking
Format
LM4835MTX/NOPB
LM4835MTX
TSSOP 28 3
3
260
235
Detail Download N/A
NSUZXYTT
LM4835MT

PDFClick link to Download

Description

The LM4835 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4 with less than 1.0% THD or 2.2W into 3 with less than 1.0% THD.

Boomer® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4835 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

The LM4835 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.

Key Specification

PO at 1% THD+N

 

into 3 (LM4835LQ, LM4835MTE)

2.2W (typ)

into 4 (LM4835LQ, LM4835MTE)

2.0W (typ)

into 8 (LM4835)

1.1W (typ)

Single-ended mode - THD+N at 85mW into 32

1.0% (typ)

Shutdown current

0.7µA (typ)

Applications

Portable and Desktop Computers
Multimedia Monitors
Portable Radios, PDAs, and Portable TVs

Features
PC98 Compliant
DC Volume Control Interface
System Beep Detect
Stereo switchable bridged/single-ended power amplifiers
Selectable internal/external gain and bass boost configurable
"Click and pop" suppression circuitry
Thermal shutdown protection circuitry

Diagrams

Typical Application
click for larger image


Block Diagram
click for larger image



Typical Performance
click for larger image


source:ShenZhen henlito electronic co.,ltd.

Prev:LM4873 Dual 2.1W Audio Amplifier Plus Stereo Headphone Function
Next:LM49101 Mono Class AB Audio Subsystem with a True Ground Headphone Amplifier and Earpiece Switch from the PowerWise® Family


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