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LM4832MMOTN/a14avaiDigitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832MTNSN/a8avaiDigitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832MXN/a1144avaiDigitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832NNSCN/a2240avaiDigitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound


LM4832N ,Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D SoundGeneral Description Key Specificationsn Output Power at 10% into 8Ω 350mW (typ)The LM4832 is a mono ..
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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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LP2980IM5-ADJ ,Micropower SOT, 50 mA Ultra Low-Dropout Adjustable Voltage RegulatorFeaturesn Ultra low dropout voltageThe LP2980-ADJ is a 50 mA adjustable voltage regulator de-signed ..
LP2980IM5X-1.5 ,Micropower SOT, 50 mA Low-Voltage Low-Dropout Regulator For Applications With Output Voltages < 2VApplications WithLP2980IM5X-1.8 ,Micropower SOT, 50 mA Low-Voltage Low-Dropout Regulator For Applications With Output Voltages < 2VFeaturesn Guaranteed 50 mA output currentThe LP2980LV is a 50 mA, fixed-output voltage regulatordes ..


LM4832M-LM4832MT-LM4832MX-LM4832N
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832
Digitally Controlled Tone and Volume Circuit with Stereo
Audio Power Amplifier, Microphone Preamp Stage and
National 3D Sound
General Description

The LM4832isa monolithic integrated circuit that provides
volume and tone (bass and treble) controlsas wellasa
stereo audio power amplifier capableof producing 250 mW
(typ) into 8Ωor90 mW (typ) into 32Ω with less than 1.0%
THD.In addition,a two input microphone preamp stage, with
volume control, capableof drivinga1kΩ loadis imple-
mentedon chip.
The LM4832 also features National’s 3D Sound circuitry
which canbe externally adjustedviaa simple RC network.
For maximum system flexibility, the LM4832 hasan exter-
nally controlled, low-power consumption shutdown mode,
andan independent mutefor power and microphone ampli-
fiers.
Boomer® audio integrated circuits were designed specifically provide high quality audio while requiring few external
components. Since the LM4832 incorporates tone and vol-
ume controls,a stereo audio power amplifier anda micro-
phone preamp stage,itis optimally suitedto multimedia
monitors and desktop computer applications.
Key Specifications
Output Powerat 10% into8Ω 350mW (typ) Output Powerat 10% into 32Ω 100mW (typ) THD+Nat 75mW into 32Ωat 1kHz 0.5% (max) Microphone Input Referred Noise 7µV (typ) Supply Current 13mA (typ) Shutdown Current 4µA (typ)
Features
Independent Left and Right Output Volume Controls Treble and Bass Control National3D SoundI2C Compatible Interface Two Microphone Inputs with Selector Software Controlled Shutdown Function
Applications
Multimedia Monitors Portable and Desktop Computers
Block Diagram

FIGURE1. LM4832 Block Diagram
December 2003
LM4832
Digitally
Controlled
one
and
olume
Circuit
with
Stereo
Audio
Power
Amplifier
Microphone
Preamp
Stage
and
National
Sound
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