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LM4992SD/NOPB |LM4992SDNOPBNSN/a4000avai420mW Stereo Cell Phone Audio Amplifier 14-WSON -40 to 85


LM4992SD/NOPB ,420mW Stereo Cell Phone Audio Amplifier 14-WSON -40 to 85Electrical Characteristics state DC and AC electricalspecifications under particular test condition ..
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LM4992SD/NOPB
420mW Stereo Cell Phone Audio Amplifier 14-WSON -40 to 85
LM4992, LM4992SDBD
www.ti.com
SNAS220B –NOVEMBER 2003–REVISED MAY 2013
LM4992 420mW Stereo Cell Phone Audio Amplifier
Checkfor Samples: LM4992, LM4992SDBD
1FEATURES DESCRIPTION

The LM4992 isa stereo audio power amplifier Availablein Space-Saving WSON Package primarily designed for demanding applications in• Ultra Low Current Shutdown Mode mobile phones and other portable communication BTL Output Can Drive Capacitive Loads device applications.Itis capableof delivering1 watt,
per channel,of continuous average powerto an 8Ω• Improved Click and Pop Circuitry Eliminates BTL load with less than 1% distortion (THD+N) fromNoise During Turn-On and Turn-Off a 5VDC power supply.Transitions
Boomer audio power amplifiers were designed• 2.2- 5.5V Operation specificallyto provide high quality output power witha• No Output Coupling Capacitors, Snubber minimal amount of external components. TheNetworksor Bootstrap Capacitors Required LM4992 does not require output coupling capacitors Unity-Gain Stable or bootstrap capacitors, and thereforeis ideally suited
for mobile phone and other low voltage applications• External Gain Configuration Capability where minimal power consumption isa primary
requirement.APPLICATIONS
The LM4992 features independent shutdown control• Mobile Phones for each channel anda low-power consumption• PDAs shutdown mode, whichis achieved by driving both Portable Electronic Devices shutdown pins with logic low. Additionally, the
LM4992 features an internal thermal shutdown
protection mechanism.KEY SPECIFICATIONS Improved PSRRat 217Hz& 1KHz:64 dB The LM4992 contains advanced click and pop
circuitry which eliminates noise which would(1KHz)
otherwise occur during turn-on and turn-off• Stereo Output Powerat 5.0V, 1% THD, 8Ω: transitions.1.07W (typ)
The LM4992 is unity-gain stable and can be• Stereo Output Powerat 3.3V, 1% THD, 8Ω: configuredby external gain-setting resistors.420 mW (typ) Shutdown Current, Vdd= 3.3V: 0.2µA (typ) Pin WSON (Top View)
See Package Number NHK0014A
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