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LM4849MH-LM4849MHX
Stereo 2W Audio Power Amplifiers with DC Volume Control and Input Mux
LM4849
Stereo 2W Audio Power Amplifiers
with DC Volume Control and Input Mux
General DescriptionThe LM4849isa monolithic integrated circuit that provides volume control, and stereo bridged audio power amplifi-
ers capableof producing 2W into4Ω (Note1) with less than
1.0% THD+N,or 2.2W into3Ω (Note2) with less than 1.0%
THD+N.
Boomer® audio integrated circuits were designed specifically provide high quality audio while requiringa minimum
amountof external components. The LM4849 incorporatesa volume control, stereo bridged audio power amplifiers,
andan input mux makingit optimally suitedfor multimedia
monitors, portable radios, desktop, and portable computer
applications.
The LM4849 featuresan externally controlled, low-power
consumption shutdown mode, and botha power amplifier
and headphone mutefor maximum system flexibility and
performance.
Note1: When properly mountedtothe circuit board,the LM4849MHwill
deliver2Winto4Ω.Seethe Application Information sectionfor LM4849MH
usage information.
Note2:An LM4849MHthathas been properly mountedtothe circuit board
and forced-air cooledwill deliver 2.2Winto3Ω.
Key Specifications POat 1% THD+N
into3Ω (Note2) 2.2W (typ)
into4Ω (Note1) 2.0W (typ)
into8Ω 1.1W (typ) Single-ended mode- THD+Nat 85mW
into 32Ω 1.0% (typ) Shutdown Current 0.2µA (typ)
Features DC Volume Control Interface Input mux Stereo switchable bridged/single-ended power amplifiers “Click and pop” suppression circuitry Thermal shutdown protection circuitry
Applications Portable and Desktop Computers Multimedia, LCD Monitors/TV Portable Radios, PDAs, and Portable TVs
Connection Diagram
TSSOP PackageTop View
Order Number LM4849MH
See NS Package Number MXA28Afor Exposed-DAP TSSOP
August 2003
LM4849
Stereo
Audio
Power
Amplifiers
with
olume
Control
and
Input
Mux
