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Partno	Mfg	Dc	Qty	Available	Descript
LM4938MHX NOPB |LM4938MHXNOPB	NSC	N/a	24200	avai	Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain 28-HTSSOP

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LM4938MHX NOPB
Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain 28-HTSSOP
LM4938
www.ti.com SNAS245B –FEBRUARY 2005–REVISED MAY 2013
LM4938 Boomer™ Audio Power Amplifier Series Stereo 2W Audio Power Amplifiers
with DC Volume Control and Selectable Gain
Checkfor Samples: LM4938
1FEATURES DESCRIPTION
The LM4938isa monolithic integrated circuit that
23• Improved Click and Pop Circuitry Virtually provides DC volume control, and stereo bridgedEliminates Noise During Turn On/Off audio power amplifiers capableof producing 2W intoTransitions 4Ω with less than 1.0% THDor 2.2W into 3Ω with• DC Volume Control Interface less than 1.0% THD. System Beep Detect Boomer audio integrated circuits were designed• Stereo Switchable Bridged/Single-Ended specifically to provide high quality audio while
Power Amplifiers requiringa minimum amountof external components.
The LM4938 incorporatesa DC volume control,• Selectable Internal/External Gain and Bass stereo bridged audio power amplifiers and aBoost selectable gain or bass boost, makingit optimally• Thermal Shutdown Protection Circuitry suited for multimedia monitors, portable radios, Unity Gain Stable desktop, and portable computer applications.
The LM4938 features an externally controlled, low-APPLICATIONS power consumption shutdown mode, and botha
power amplifier and headphone mute for maximum• Flat Panel Displays
system flexibility and performance.• Portable and Desktop Computers
Note1: When properly mountedto the circuit board,• Multimedia Monitors LM4938MH will deliver 2W into 4Ω. See Application• Portable Radios, PDAs, and Portable TVs Information section HTSSOP PACKAGE PCB
MOUNTING CONSIDERATIONS for moreKEY SPECIFICATIONS information. POat 1% THD+N Note 2: An LM4938MH that has been properly into 3Ω: 2.2W (typ) mountedto the circuit board and forced-air cooled will
deliver 2.2W into 3Ω.– into 4Ω: 2.0W (typ) into 8Ω: 1.3W (typ) Single-ended mode into 32Ω: 1.0% (typ) 0.5µ