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LM4923 - 1.1 Watt Fully Differential Audio Power Amplifier

General Description

The LM4923 is a fully differential audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

Key Features

  • 1.
  • 2 Fully Differential Amplification.
  • Available in Space-saving WQFN Package.
  • Ultra Low Current Shutdown Mode.
  • Can Drive Capacitive Loads up to 100pF.
  • Improved Pop & Click Circuitry Eliminates Noises During Turn-on and Turn-off Transitions.
  • 2.4 - 5.5V Operation.
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required.

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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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LM4923, LM4923LQBD www.ti.com SNAS211E – JULY 2004 – REVISED MAY 2013 LM4923 1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select Check for Samples: LM4923, LM4923LQBD FEATURES 1 •2 Fully Differential Amplification • Available in Space-saving WQFN Package • Ultra Low Current Shutdown Mode • Can Drive Capacitive Loads up to 100pF • Improved Pop & Click Circuitry Eliminates Noises During Turn-on and Turn-off Transitions • 2.4 - 5.5V Operation • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required APPLICATIONS • Mobile Phones • PDAs • Portable Electronic Devices KEY SPECIFICATIONS • Improved PSRR at 217Hz 85dB(typ) • Power Output at 5.0V @ 1% THD+N 1.1W(typ) • Power Output at 3.3V @ 1% THD+N 400mW(typ) • Shutdown Current 0.