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LM4894IBPNSCN/a1000avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894IBPXNSN/a3000avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894ITLNSN/a2286avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894ITLXNSN/a2196avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894LDNSN/a33451avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894LDXNSN/a4285avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894MMNATIONALN/a45avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894MMXNSN/a1000avai1 Watt Fully Differential Audio Power Amplifier With Shutdown Select


LM4894LD ,1 Watt Fully Differential Audio Power Amplifier With Shutdown SelectFeatures(THD+N) from a 5V power supply.DCn Fully differential amplificationBoomeraudiopoweramplifie ..
LM4894LDX ,1 Watt Fully Differential Audio Power Amplifier With Shutdown SelectLM4894 1 Watt Fully Differential Audio Power Amplifier With Shutdown SelectJune 2003LM48941 Watt Fu ..
LM4894MM ,1 Watt Fully Differential Audio Power Amplifier With Shutdown Selectfeatures a low-power consumption shutdownn No output coupling capacitors, snubber networks ormode. ..
LM4894MMX ,1 Watt Fully Differential Audio Power Amplifier With Shutdown SelectFeatures(THD+N) from a 5V power supply.DCn Fully differential amplificationBoomeraudiopoweramplifie ..
LM4895LD ,1 Watt Fully Differential Audio Power Amplifier With Shutdown Select and Fixed 6dB GainFeaturesprovide high quality output power with a minimal amount ofexternal components. The LM4895 d ..
LM4895MM ,1 Watt Fully Differential Audio Power Amplifier With Shutdown Select and Fixed 6dB GainElectrical Characteristics V =5V (Notes 1, 2, 8)DDThe following specifications apply for V = 5V and ..
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LP2985AITPX-2.8 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesLP2985 Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMDPackagesMarch ..
LP2985AITPX-2.9 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesFeaturesn Ultra low dropout voltageThe LP2985 is a 150 mA, fixed-output voltage regulatordesigned t ..


LM4894IBP-LM4894IBPX-LM4894ITL-LM4894ITLX-LM4894LD-LM4894LDX-LM4894MM-LM4894MMX
1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
LM4894 Watt Fully Differential Audio Power Amplifier With
Shutdown Select
General Description

The LM4894isa fully differential audio power amplifier
primarily designedfor demanding applicationsin mobile
phones and other portable communication device applica-
tions.Itis capableof delivering1 wattof continuous average
powertoan 8Ω BTL load with less than 1% distortion
(THD+N) froma 5VDC power supply.
Boomer audio power amplifiers were designed specificallyto
provide high quality output power witha minimal amountof
external components. The LM4894 doesnot require output
coupling capacitorsor bootstrap capacitors, and thereforeis
ideally suitedfor mobile phone and other low voltage appli-
cations where minimal power consumptionisa primaryre-
quirement.
The LM4894 featuresa low-power consumption shutdown
mode.To facilitate this, Shutdown maybe enabledby either
logic highor low dependingon mode selection. Driving the
shutdown modepin either highor low enablesthe shutdown
selectpintobe drivenina likewise mannerto enable Shut-
down. Additionally, the LM4894 featuresan internal thermal
shutdown protection mechanism.
The LM4894 contains advanced pop& click circuitry which
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4894is unity-gain stable and canbe configuredby
external gain-setting resistors.
Key Specifications
Improved PSRRat 217Hz 80dB(typ) Power Outputat 5.0V& 1% THD 1.0W(typ) Power Outputat 3.3V& 1% THD 400mW(typ) Shutdown Current 0.1µA(typ)
Features
Fully differential amplification Availablein space-saving packages micro SMD, MSOP,
and LLP Ultra low current shutdown mode Can drive capacitive loadsupto 500pF Improved pop& click circuitry eliminates noises during
turn-on and turn-off transitions 2.2- 5.5V operation No output coupling capacitors, snubber networksor
bootstrap capacitors required Unity-gain stable External gain configuration capability Shutdown highor low selectivity High CMRR
Applications
Mobile phones PDAs Portable electronic devices
Connection Diagrams
Mini Small Outline (MSOP) Package LLP Package

Top View
Order Number LM4894MM
See NS Package Number MUB10A
Top View
Order Number LM4894LD
See NS Package Number LDA10B
June 2003
LM4894
att
Fully
Differential
Audio
Power
Amplifier
ith
Shutdown
Select
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