200-mW, stereo, analog input, headphone amplifier


Product details


Output power (W) 0.15 Analog supply (Min) (V) 2.7 Analog supply (Max) (V) 5.5 PSRR (dB) 50 Rating Catalog Operating temperature range (C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (uA) 0.7 Architecture Class-AB Iq per channel (Typ) (mA) 1.8 open-in-new Find other Headphone amps

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Headphone amps


  • VSSOP Surface Mount Packaging
  • Unity-gain Stable
  • External Gain Configuration Capability
  • Thermal Shutdown Protection Circuitry
  • No Bootstrap Capacitors, or Snubber Circuits are Necessary

Key Specifications

  • THD+N at 1kHz at 125mW Continuous Average Output Power into 8Ω 0.1% (max)
  • THD+N at 1kHz at 75mW Continuous
    0.02% (typ)
  • Output Power at 10% THD+N at 1kHz into 8Ω 300 mW (typ)
  • Shutdown Current 0.7µA (typ)
  • Supply Voltage Range 2.7V to 5.5 V

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The LM4881 is a dual audio power amplifier capable of delivering 200mW of continuous average power into an 8Ω load with 0.1% THD+N from a 5V power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the LM4881 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The LM4881 features an externally controlled, low power consumption shutdown mode which is virtually clickless and popless, as well as an internal thermal shutdown protection mechanism.

The unity-gain stable LM4881 can be configured by external gain-setting resistors.

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Technical documentation

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Type Title Date
* Datasheet LM4881 Dual 200 mW Headphone Amplifier with Shutdown Mode datasheet (Rev. D) May 02, 2013
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019

Design & development

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CAD/CAE symbols

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SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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