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MAX9779
2.6W Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier

Not Recommended for New Designs
Part Number Replacement Explanation
MAX9779ETI+ n/a This product is being discontinued and is subject to Last Time Buy, after which new orders can not be placed.


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Description
FULL DATA SHEET (PDF, 548kB)
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The MAX9779 combines a stereo, 2.6W audio power amplifier and stereo DirectDrive™ 110mW headphone amplifier in a single device. The headphone amplifier uses Maxim's patented DirectDrive architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, space, and component height. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the audio signal through the Class AB speaker amplifiers.

The MAX9779 features a single-supply voltage, a shutdown mode, logic-selectable gain, and a headphone sense input. Industry-leading click-and-pop suppression eliminates audible transients during power and shutdown cycles.

The MAX9779 is offered in a space-saving, thermally efficient 28-pin thin QFN (5mm x 5mm x 0.8mm) package. The device has thermal-overload and output short-circuit protection, and is specified over the extended -40°C to +85°C temperature range.

Key Features   Applications/Uses
  • No DC-Blocking Capacitors Required—Provides Industry's Most Compact Notebook Audio Solution
  • PC2001 Compliant
  • 5V Single-Supply Operation
  • Class AB 2.6W Stereo BTL Speaker Amplifiers
  • 110mW DirectDrive Headphone Amplifiers
  • High 90dB PSRR
  • Low-Power Shutdown Mode
  • Industry-Leading Click-and-Pop Suppression
  • Low 0.01% THD+N at 1kHz
  • Short-Circuit and Thermal-Overload Protection
  • Selectable Gain Settings (15dB, 16.5dB, 18dB, and 19.5dB)
  • ±8kV ESD-Protected Headphone Driver Outputs
  • Available in Space-Saving, Thermally Efficient Package
    28-Pin Thin QFN (5mm x 5mm x 0.8mm)

     
  • Flat-Panel TVs
  • LCD Projectors
  • Multimedia Monitors
  • Notebook PCs
  • Portable DVD Players
  • Tablet PCs

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    Document Ref.: 19-3766; Rev 0; 2005-08-13
    This page last modified: 2005-11-30



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