LM4834MSX ,Boomer 1.75W Audio Power Amplifier with DC Volume Control and Microphone PreampElectrical Characteristics for Microphone Preamp and PowerSupply (Continued)(Notes 1, 2)The followi ..
LM4834MSX ,Boomer 1.75W Audio Power Amplifier with DC Volume Control and Microphone PreampFeaturesto provide high quality audio while requiring a minimumn PC98 Compliantamountofexternalcomp ..
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LP2980IM5X-1.8 ,Micropower SOT, 50 mA Low-Voltage Low-Dropout Regulator For Applications With Output Voltages < 2VApplicationsn Cellular Phonen Palmtop/Laptop Computern Personal Digital Assistant (PDA)n Camcorder, ..
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LP2980IM5X-2.8 ,Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23 and micro SMD PackagesFeaturesn Ultra low dropout voltageThe LP2980 is a 50 mA, fixed-output voltage regulator de-signed ..
LP2980IM5X-2.8 ,Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23 and micro SMD PackagesApplicationspacitance on the regulator output.n Cellular PhonePrecisionOutput. 0.5% tolerance outpu ..
LM4834MS-LM4834MSX
Boomer 1.75W Audio Power Amplifier with DC Volume Control and Microphone Preamp
LM4834
1.75W Audio Power Amplifier with DC Volume Control
and Microphone Preamp
General DescriptionThe LM4834isa monolithic integrated circuit that provides volume control, anda bridged audio power amplifier
capableof producing 1.75W into 4Ω with less than 1.0%
(THD).In addition, the headphone/lineout amplifieris ca-
pableof driving70 mW into 32Ω with less than 0.1%(THD).
The LM4834 incorporatesa volume control andan input
microphone preamp stage capableof drivinga1kΩ load
impedance.
Boomer® audio integrated circuits were designed specifically provide high quality audio while requiringa minimum
amountof external componentsin surface mount packaging.
The LM4834 incorporatesa DC volume control,a bridged
audio power amplifier anda microphone preamp stage,
makingit optimally suitedfor multimedia monitors and desk-
top computer applications.
The LM4834 featuresan externally controlled, low-power
consumption shutdown mode, and botha power amplifier
and headphone mutefor maximum system flexibility and
performance.
Key Specifications THDat 1.1W continuous average output power into8Ω 1kHz 0.5% (max) Output Power into4Ωat 1.0% THD+N 1.75W (typ) THDat 70mW continuous average output power into
32Ωat 1kHz 0.1% (typ) Shutdown Current 1.0µA (max) Supply Current 17.5mA (typ)
Features PC98 Compliant “Click and Pop” suppression circuitry Stereo line level outputs with mono input capabilityfor
system beeps Microphone preamp with buffered power supply DC Volume Control Interface Thermal shutdown protection circuitry
Applications Multimedia Monitors Desktop and Portable Computers
Block Diagram Connection Diagram
SSOP PackageTop View
Order Number LM4834MS
See NS Package Number MSA028CBfor SSOP
FIGURE1. LM4834 Block Diagram
August 2000
LM4834
1.75W
Audio
Power
Amplifier
with
olume
Control
and
Microphone
Preamp
