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2.3W, High-Power Class D Audio Subsystem with DirectDrive Headphone Amplifiers

Industry's Smallest Audio Subsystem, Improved Class D Output Power with Integrated DirectDrive Headphone Amplifiers, 3D Sound Enhancement Sound, and 3-Input with Mixing/Mux

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • Unique Spread-Spectrum Modulation and Active Emissions Limiting Significantly Reduces EMI
  • Up to 3 Stereo Inputs
  • 2.3W Mono Speaker Output (4Ω, VDD = 5V)
  • 50mW Mono Receiver/Stereo Headphone Outputs (32Ω, VDD = 3.3V)
  • High PSRR (68dB at 217Hz)
  • 80% Efficiency (VDD = 3.3V, RL = 8Ω, POUT = 600mW)
  • I²C Control—Input Configuration, Volume Control, Output Mode
  • Click-and-Pop Suppression
  • Low Total Harmonic Distortion (0.03% at 1kHz)
  • Current-Limit and Thermal Protection
  • Available in Space-Saving, 36-Bump UCSP (3mm x 3mm)

Applications/Uses

  • Cell Phones
  • Handheld Gaming Consoles
  • Portable Multimedia Players

Description

The MAX9796 combines a high-efficiency Class D, mono audio power amplifier with a mono DirectDrive® receiver amplifier and a stereo DirectDrive headphone amplifier.

Maxim's 3rd-generation, ultra-low EMI, Class D audio power amplifiers provide Class AB performance with Class D efficiency. The MAX9796 delivers 2.3W into a 4Ω load from a 5V supply and offers efficiencies up to 80%. Active emissions limiting circuitry and spread-spectrum modulation greatly reduce EMI, eliminating the need for output filtering found in traditional Class D devices.

The MAX9796 features a fully differential architecture, a full-bridged output, and comprehensive click-and-pop suppression. The device utilizes a flexible, user-defined mixer architecture that includes an input mixer, volume control, and output mixer. All controls are done through an I²C interface.

The mono receiver amplifier and stereo headphone amplifier use 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.

The MAX9796 is available in a 36-bump UCSP™ (3mm x 3mm) package and is specified over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX9796: Block Diagram MAX9796: Block Diagram Zoom icon

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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.