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LM4838LQ-LM4838MT-LM4838MTE-LM4838MTEX-LM4838MTX Fast Delivery,Good Price
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LM4838LQNSN/a450avaiStereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4838MTNSN/a749avaiStereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4838MTEN/a945avaiStereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4838MTEXNS/PBFN/a269avaiStereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4838MTXNSN/a5000avaiStereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain


LM4838MTX ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainApplicationsLM4838ITL will deliver 1.1W into 8Ω. See Application Information sectionExposed-DAP pac ..
LM4839LQ ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Muxfeatures an externally controlled, low-powern Stereo switchable bridged/single-ended power amplifie ..
LM4839LQX ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxElectrical Characteristics for Entire IC(Notes 7, 10)The following specifications apply for V = 5V ..
LM4839MT ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxElectrical Characteristics for Entire IC(Notes 7, 10)The following specifications apply for V = 5V ..
LM4839MT ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxGeneral Description Key Specificationsn P at 1% THD+NThe LM4839 is a monolithic integrated circuit ..
LM4839MTE ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxGeneral Description Key Specificationsn P at 1% THD+NThe LM4839 is a monolithic integrated circuit ..
LP2980IM5X-ADJ ,Micropower SOT, 50 mA Ultra Low-Dropout Adjustable Voltage RegulatorLP2980-ADJ Micropower SOT, 50 mA Ultra Low-Dropout Adjustable Voltage RegulatorApril 2000LP2980-ADJ ..
LP2981-28DBVR ,100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN
LP2981-29DBVR ,100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN
LP2981-30DBVTG4 ,Single Output LDO, 100mA, Fixed(3.0V), Shutdown, 1.25% Tolerance 5-SOT-23 -40 to 125
LP2981-33DBVR ,100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN
LP2981-33DBVTG4 ,Single Output LDO, 100mA, Fixed(3.3V), Shutdown, 1.25% Tolerance 5-SOT-23 -40 to 125


LM4838LQ-LM4838MT-LM4838MTE-LM4838MTEX-LM4838MTX
Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4838
Stereo 2W Audio Power Amplifiers
with DC Volume Control and Selectable Gain
General Description

The LM4838isa monolithic integrated circuit that provides volume control, and stereo bridged audio power amplifi-
ers capableof producing 2W into4Ω (Note1) with less than
1.0% THDor 2.2W into 3Ω (Note2) with less than 1.0%
THD.
Boomer® audio integrated circuits were designed specifically provide high quality audio while requiringa minimum
amountof external components. The LM4838 incorporatesa volume control, stereo bridged audio power amplifiers
anda selectable gainor bass boost, makingit optimally
suitedfor multimedia monitors, portable radios, desktop, and
portable computer applications.
The LM4838 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 LM4838LQ,
LM4838MTE,and LM4838GRwill deliver2Winto4Ω.The LM4838MTand
LM4838ITLwill deliver 1.1Winto8Ω.See Application Information section
Exposed-DAP package PCB Mounting Considerations
for more informa-
tion.
Note2:
An LM4838LQand LM4838MTEthat have been properly mountedthe circuit boardand forced-air cooledwill deliver 2.2Winto3Ω.
Key Specifications
POat 1% THD+N into3Ω (LQ& MTE) 2.2W (typ) into4Ω (LQ, MTE, GR) 2.0W (typ) into8Ω (MT, MTE, ITL, LQ,& GR) 1.1W (typ) Single-ended mode- THD+Nat 85mW into
32Ω 1.0%(typ) Shutdown current 0.7µA (typ)
Features
DC Volume Control Interface System Beep Detect Stereo switchable bridged/single-ended power amplifiers Selectable internal/external gain and bass boost “Click and pop” suppression circuitry Thermal shutdown protection circuitry
Applications
Portable and Desktop Computers Multimedia Monitors Portable Radios, PDAs, and Portable TVs
Block Diagram

FIGURE1. LM4838 Block Diagram
November 2004
LM4838
Stereo
Audio
Power
Amplifiers
with
olume
Control
and
Selectable
Gain
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