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2.6W Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier

Product Details

Key Features

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Key Features

  • 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)

Applications/Uses

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

Description

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 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.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .