LM4881

www.ti.com

SNAS001D – SEPTEMBER 1997 – REVISED MAY 2013

LM4881

Dual 200 mW Headphone Amplifier with

Shutdown Mode

Check for Samples: LM4881

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FEATURES

DESCRIPTION

The LM4881 is a dual audio power amplifier capable

23

•

VSSOP Surface Mount Packaging

of delivering 200mW of continuous average power

•

Unity-gain Stable

into an 8

Ω load with 0.1% THD+N from a 5V power

•

External Gain Configuration Capability

supply.

•

Thermal Shutdown Protection Circuitry

Boomer™ audio power amplifiers were designed

•

No Bootstrap Capacitors, or Snubber Circuits

specifically to provide high quality output power with a

minimal

amount

of

external

components

using

are Necessary

surface mount packaging. Since the LM4881 does

not require bootstrap capacitors or snubber networks,

APPLICATIONS

it is optimally suited for low-power portable systems.

•

Headphone Amplifier

The LM4881 features an externally controlled, low

•

Personal Computers

power consumption shutdown mode which is virtually

•

Microphone Preamplifier

clickless and popless, as well as an internal thermal

shutdown protection mechanism.

KEY SPECIFICATIONS

The unity-gain stable LM4881 can be configured by

•

THD+N at 1kHz at 125mW Continuous Average

external gain-setting resistors.

Output Power into 8

Ω 0.1% (max)

•

THD+N at 1kHz at 75mW Continuous

0.02% (typ)

•

Output Power at 10% THD+N at 1kHz into 8

Ω

300 mW (typ)

•

Shutdown Current 0.7µA (typ)

•

Supply Voltage Range 2.7V to 5.5 V

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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Boomer is a trademark of Texas Instruments.

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All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 1997–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.