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LM4881-LM4881MX/NOPB
Boomer Dual 200 mW Headphone Amplifier with Shutdown Mode 8-SOIC -40 to 85
LM4881
www.ti.com SNAS001D –SEPTEMBER 1997–REVISED MAY 2013
LM4881 Dual 200 mW Headphone Amplifier with
Shutdown Mode
Checkfor Samples: LM4881
1FEATURES DESCRIPTIONThe LM4881isa dual audio power amplifier capable
23• VSSOP Surface Mount Packaging of delivering 200mW of continuous average power
• Unity-gain Stable into an 8Ω load with 0.1% THD+N froma 5V power
External Gain Configuration Capability supply.
Thermal Shutdown Protection Circuitry Boomer™ audio power amplifiers were designed
No Bootstrap Capacitors,or Snubber Circuits specificallyto provide high quality output power witha
minimal amount of external components using
are Necessarysurface mount packaging. Since the LM4881 does
not require bootstrap capacitorsor snubber networks,
APPLICATIONS itis optimally suited for low-power portable systems.
• Headphone Amplifier The LM4881 features an externally controlled, low
• Personal Computers power consumption shutdown mode whichis virtually
• Microphone Preamplifier clickless and popless, as wellas an internal thermal
shutdown protection mechanism.
KEY SPECIFICATIONS The unity-gain stable LM4881 can be configured by
THD+Nat 1kHzat 125mW Continuous Average external gain-setting resistors.
Output Power into 8Ω 0.1% (max) THD+Nat 1kHzat 75mW Continuous
0.02% (typ) Output Powerat 10% THD+Nat 1kHz into 8Ω
300 mW (typ) Shutdown Current 0.7µA (typ) Supply Voltage Range 2.7Vto 5.5V
