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LM4906 - Bypass-Capacitor-less Audio Amplifier

General Description

The LM4906 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

It is capable of delivering 1W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a +5V power supply.

Key Features

  • 1.
  • 2 Selectable Gain of 6dB (2V/V) or 12dB (4V/V).
  • No Output or PSRR Bypass Capacitors Required.
  • Improved “Click and Pop” Suppression Circuitry.
  • Very Fast Turn on Time: 5ms (Typ).
  • Minimum External Components.
  • 2.6 - 5.5V Operation.
  • BTL Output Can Drive Capacitive Loads.
  • Ultra Low Current Shutdown Mode (SD Low).

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📁 Similar Datasheet

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Other Datasheets by Texas Instruments

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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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LM4906, LM4906LDBD, LM4906MMBD www.ti.com SNAS191E – APRIL 2003 – REVISED MAY 2013 LM4906 1W, Bypass-Capacitor-less Audio Amplifier with Internal Selectable Gain Check for Samples: LM4906, LM4906LDBD, LM4906MMBD FEATURES 1 •2 Selectable Gain of 6dB (2V/V) or 12dB (4V/V) • No Output or PSRR Bypass Capacitors Required • Improved “Click and Pop” Suppression Circuitry • Very Fast Turn on Time: 5ms (Typ) • Minimum External Components • 2.6 - 5.5V Operation • BTL Output Can Drive Capacitive Loads • Ultra Low Current Shutdown Mode (SD Low) APPLICATIONS • Portable Computers • Desktop Computers • Multimedia Monitors KEY SPECIFICATIONS • Improved PSRR at 217Hz for +3V: 71 dB • Power Output at +5V, THD+N = 1%, 8Ω: 1.