Data Sheet Rev. 0
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Overview

Features and Benefits

  • No DC-Blocking Output Capacitors Required at Headphone Output
  • Speaker and Headphone Operation
    • Speaker: 2W Stereo Output
    • Headphone: 180mW DirectDrive Stereo Output
  • Wake-on-Beep Function
  • 120mA, 4.75V LDO
  • Lead-Free and RoHS Compliant
  • Fully Assembled and Tested

Product Details

The MAX9791A evaluation kit (EV kit) demonstrates the MAX9791A IC, which combines a stereo Class D power amplifier, a DirectDrive® stereo headphone amplifier, and a 120mA, 4.75V low-dropout regulator (LDO) for notebook, tablet PC, and portable media player applications. Maxim's DirectDrive technology eliminates the need for bulky DC-blocking capacitors at the output of the headphone amplifier.

The EV kit is configured for a 12dB speaker amplifier gain and a 0dB headphone amplifier gain. It is designed to operate from a 4.5V to 5.5V speaker supply and an optional separate 2.7V to 5.5V headphone supply. The EV kit is capable of delivering up to 2W into a pair of 4Ω speakers and 180mW into a 32Ω headphone load.

Applications

  • Notebook Computers
  • Portable Multimedia Players
  • Tablet PCs

Applicable Parts

Documentation & Resources

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