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1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select



  • Fully differential amplification
  • Available in space-saving LLP 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


  • Mobile phones
  • PDA's
  • Portable electronic devices


Texas Instruments  LM4923LQBD

The LM4923 is a fully differential audio power amplifier that is capable of delivering 1.1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

This LM4923LQBD is an evaluation board designed to ease the evaluation and effort during the development of a circuit using the LM4923LQ. It is an easy to use stand-alone board that requires power and GND, an input signal and an output load.