LM4855LQX ,Integrated Audio Amplifier SystemFeaturessupply.n 1.1W (typ) output power with 8Ω mono BTL loadThe LM4855
LM4856ITL ,Integrated Audio Amplifier SystemGeneral Description Key Specificationsn THD+N at 1kHz, 1.1W into 8Ω BTL 1.0% (typ)The LM4856 is an ..
LM4856ITLX ,Integrated Audio Amplifier Systemapplications.Itdelivershighqualityoutputpower from a surface-mount package and requires only n Low ..
LM4856LQ ,Integrated Audio Amplifier Systemfeatures a 32 step digital volume control andn 60mW (typ) output power with stereo 32Ω SE loadseigh ..
LM4857ITL ,Stereo 1.2W Audio Sub-system with 3D EnhancementGeneral Description Key SpecificationsThe LM4857 is an integrated audio sub-system designed forj P ..
LM4857ITLX ,Stereo 1.2W Audio Sub-system with 3D EnhancementApplicationsn Cell Phonesn PDAsn Portable Gaming Devicesn Internet Appliancesn Portable DVD/CD/AAC/ ..
LP2981AIM5X-3.1 ,Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packagesapplications.n Guaranteed 100 mAoutput currentUsing an optimized VIP™ (Vertically Integrated PNP) p ..
LP2981AIM5X-3.1 ,Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesApplicationsPrecision Output. 0.75% tolerance output voltages avail-n Cellular Phoneable (Agrade).n ..
LP2981AIM5X-3.2 ,Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesLP2981 Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesJanuary 2003LP ..
LP2981AIM5X-3.3 ,Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesLP2981 Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesJanuary 2003LP ..
LP2981AIM5X-3.6 ,Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesLP2981 Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesJanuary 2003LP ..
LP2981AIM5X-3.8 ,Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packagesapplications.n Guaranteed 100 mAoutput currentUsing an optimized VIP™ (Vertically Integrated PNP) p ..
LM4855IBL-LM4855IBLX-LM4855ITLX-LM4855LQ-LM4855LQX
Integrated Audio Amplifier System
LM4855
Integrated Audio Amplifier System
General DescriptionThe LM4855isan audio power amplifier system capableof
delivering 1.1W (typ)of continuous average power intoa
mono 8Ω bridged-tied load (BTL) with 1% THD+N and
115mW (typ) per channelof continuous average power into
stereo 32Ω BTL loads with 0.5% THD+N, usinga5V power
supply.
The LM4855 featuresa32 step digital volume control and
eight distinct output modes. The digital volume control and
output modes are programmed througha three-wire SPI
serial control interface, that allows flexibilityin routing and
mixing audio channels.
The LM4855is designedfor cellular phone, PDA, and other
portable handheld applications.It delivers high quality output
power froma surface-mount package and requires onlysix
external components.
The industry leading micro SMD package only utilizes 2mm 2.3mmof PCB space, makingthe LM4855the most space
efficient audio sub system available today.
Key Specifications THD+Nat 1kHz, 1.1W into8Ω BTL 1.0% (typ) THD+Nat 1kHz, 115mW into 32Ω BTL 0.5% (typ) Single Supply Operation 2.6to 5.0V
Features 1.1W (typ) output power with8Ω mono BTL load 115mW (typ) output power with stereo 32Ω BTL loads SPI programmable32 step digital volume control Eight distinct output modes micro-SMD and LLP surface mount packaging "Click and Pop" suppression circuitry Thermal shutdown protection Low shutdown current (0.1uA, typ)
Applications Moblie Phones PDAs
Typical Application200395D1
FIGURE1. Typical Audio Amplifier Application CircuitNovember 2002
LM4855
Integrated
Audio
Amplifier
System
