LM4836_15 Datasheet, PDF (1/39 Pages) Texas Instruments – Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux

LM4836
www.ti.com
SNAS045F – JUNE 1999 – REVISED MAY 2013
LM4836
Stereo 2W Audio Power Amplifiers
with DC Volume Control, Bass Boost, and Input Mux
Check for Samples: LM4836
FEATURES
1
•2 PC98 and PC99 Compliant
• DC Volume Control Interface
• Input Mux
• System Beep Detect
• Stereo Switchable Bridged/Single-Ended
Power Amplifiers
• Selectable Internal/External Gain and Bass
Boost Configurable
• “Click and Pop” Suppression Circuitry
• Thermal Shutdown Protection Circuitry
APPLICATIONS
• Portable and Desktop Computers
• Multimedia Monitors
• Portable Radios, PDAs, and Portable TVs
KEY SPECIFICATIONS
• P_O at 1% THD+N
• Into 3Ω (LM4836LQ, LM4836MTE) 2.2 W (typ)
• Into 4Ω (LM4836LQ, LM4836MTE) 2.0 W (typ)
• Into 8Ω (LM4836) 1.1 W (typ)
• Single-Ended Mode - THD+N at 85 mW Into
32Ω 1.0% (typ)
• Shutdown Current 0.2µA (typ)
DESCRIPTION
The LM4836 is a monolithic integrated circuit that
provides DC volume control, and stereo bridged
audio power amplifiers capable of producing 2W into
4Ω with less than 1.0% THD+N, or 2.2W into 3Ω with
less than 1.0% THD+N (see Notes below).
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: 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: An LM4836LQ and LM4836MTE that have
been properly mounted to the circuit board and
forced-air cooled will deliver 2.2W into 3Ω.
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated