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LM4855 - Integrated Audio Amplifier

General Description

The LM4855 is an audio power amplifier system capable of delivering 1.1W (typ) of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and 115mW (typ) per channel of continuous average power into stereo 32Ω BTL loads with 0.5% THD+N, using a 5V power supply.

Key Features

  • 1.
  • 2 1.1W (Typ) Output Power with 8Ω Mono BTL Load.
  • 115mW (Typ) Output Power with Stereo 32Ω BTL Loads.
  • SPI Programmable 32 Step Digital Volume Control.
  • Eight Distinct Output Modes.
  • DSBGA and WQFN Surface Mount Packaging.
  • "Click and Pop" Suppression Circuitry.
  • Thermal Shutdown Protection.
  • Low Shutdown Current (0.1uA, Typ) KEY.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM4855 www.ti.com SNAS164C – JUNE 2002 – REVISED MAY 2013 LM4855 Integrated Audio Amplifier System Check for Samples: LM4855 FEATURES 1 •2 1.1W (Typ) Output Power with 8Ω Mono BTL Load • 115mW (Typ) Output Power with Stereo 32Ω BTL Loads • SPI Programmable 32 Step Digital Volume Control • Eight Distinct Output Modes • DSBGA and WQFN Surface Mount Packaging • "Click and Pop" Suppression Circuitry • Thermal Shutdown Protection • Low Shutdown Current (0.1uA, Typ) KEY SPECIFICATIONS • THD+N at 1kHz, 1.1W into 8Ω BTL: 1.0% (Typ) • THD+N at 1kHz, 115mW into 32Ω BTL: 0.5% (Typ) • Single Supply Operation: 2.6 to 5.0V DESCRIPTION The LM4855 is an audio power amplifier system capable of delivering 1.