LM4811 - LM4811 Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode

The LM4811 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω 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. Since the LM4811 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The LM4811 features a digital volume control that sets the amplifier's gain from +12dB to −33dB in 16 discrete steps using a two−wire interface.

The unity-gain stable LM4811 also features an externally controlled, active-high, micropower consumption shutdown mode. It also has an internal thermal shutdown protection mechanism.

Products containing the "LM4811" keyword are: LM4811LD , LM4811LD NOPB , LM4811LD/NOPB , LM4811LDBD , LM4811LDNOPB , LM4811LDX , LM4811LDX NOPB , LM4811LDX/NOPB , LM4811M , LM4811MM , LM4811MM 1K/P , LM4811MM TSSOP , LM4811MM/NOPB , LM4811MM/NOPB , LM4811MM/YZAB G11 , LM4811MM1K/P , LM4811MMBD , LM4811MMNOPB , LM4811MMX , LM4811MMX(G11)

• Digital Volume Control Range from +12dB to −33dB
• WSON and VSSOP Surface Mount Packaging
• "Click and Pop" Suppression Circuitry
• No Bootstrap Capacitors Required
• Low Shutdown Current

Key Specifications

• THD+N at 1kHz, 105mW Continuous Average Output Power into 16Ω 0.1 % (typ)
• THD+N at 1kHz, 70mW Continuous  Average Power into 32Ω 0.1 % (typ)
• Shutdown Current 0.3 μA (typ)

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