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


Package | PIN: DGS | 10
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.00
10-24 $0.89
25-99 $0.83
100-249 $0.71
250-499 $0.65
500-749 $0.53
750-999 $0.43
1000+ $0.38


  • 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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Texas Instruments  LM4811MM/NOPB

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.