LM4836MTEX

Manufacturer Part NumberLM4836MTEX
DescriptionStereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
ManufacturerNational Semiconductor
LM4836MTEX datasheet
 


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LM4836
Stereo 2W Audio Power Amplifiers
with DC Volume Control, Bass Boost, and Input Mux
General Description
The LM4836 is a monolithic integrated circuit that provides
DC volume control, and stereo bridged audio power amplifi-
ers capable of producing 2W into 4Ω (Note 1) with less than
1.0% THD+N, or 2.2W into 3Ω (Note 2) with less than 1.0%
THD+N.
Boomer
®
audio integrated circuits were designed specifically
to provide high quality audio while requiring a minimum
amount of external components. The LM4836 incorporates a
DC volume control, stereo bridged audio power amplifiers,
selectable gain or bass boost, and an input mux making it
optimally suited for multimedia monitors, portable radios,
desktop, and portable computer applications.
The LM4836 features an externally controlled, low-power
consumption shutdown mode, and both a power amplifier
and headphone mute for maximum system flexibility and
performance.
Note 1: When properly mounted to the circuit board, the LM4836LQ and
LM4836MTE will deliver 2W into 4Ω. The LM4836MT will deliver 1.1W into
8Ω. See the Application Information section for LM4836LQ and LM4836MTE
usage information.
Note 2: An LM4836LQ and LM4836MTE that have been properly mounted
to the circuit board and forced-air cooled will deliver 2.2W into 3Ω.
Connection Diagrams
LLP Package
Top View
Order Number LM4836LQ
See NS Package LQA028AA for Exposed-DAP LLP
Boomer
®
is a registered trademark of NationalSemiconductor Corporation.
© 2004 National Semiconductor Corporation
Key Specifications
n P
at 1% THD+N
O
n into 3Ω (LM4836LQ, LM4836MTE)
n into 4Ω (LM4836LQ, LM4836MTE)
n into 8Ω (LM4836)
n Single-ended mode - THD+N at 85mW into
32Ω
n Shutdown current
Features
n PC98 and PC99 Compliant
n DC Volume Control Interface
n Input mux
n System Beep Detect
n Stereo switchable bridged/single-ended power amplifiers
n Selectable internal/external gain and bass boost
configurable
n “Click and pop” suppression circuitry
n Thermal shutdown protection circuitry
Applications
n Portable and Desktop Computers
n Multimedia Monitors
n Portable Radios, PDAs, and Portable TVs
Order Number LM4836MT or LM4836MTE
10108883
See NS Package MTC28 for TSSOP or MXA28A for
DS101088
June 2002
2.2W(typ)
2.0W(typ)
1.1W(typ)
1.0%(typ)
0.2µA(typ)
TSSOP Package
10108802
Top View
Exposed-DAP TSSOP
www.national.com

LM4836MTEX Summary of contents