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12W+12W, Low-EMI, Spread-Spectrum, Stereo, Class D Amplifier

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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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.

Key Features

  • Low EMI
  • Unique Spread-Spectrum Mode Offers 5dB Emissions Improvement Over Conventional Methods
  • Up to 88% Efficient into 16Ω
  • 12W+12W Continuous Output Power into 8Ω
  • 15W+15W Continuous Output Power into 16Ω
  • Low 0.07% THD+N
  • High PSRR (80dB at 1kHz)
  • 10V to 25V Single-Supply Operation
  • Differential Inputs Minimize Common-Mode Noise
  • Pin-Selectable Gain Reduces Component Count
  • Industry-Leading Click-and-Pop Suppression
  • Low Quiescent Current (24mA)
  • Low-Power Shutdown Mode (0.2µA)
  • Short-Circuit and Thermal-Overload Protection
  • Available in Thermally Efficient, Space-Saving 56-Pin TQFN (8mm x 8mm x 0.8mm) Package

Applications/Uses

  • Automotive
  • Desktop PCs
  • LCD Monitors
  • LCD Projectors
  • LCD TVs

Description

The MAX9741 stereo Class D audio power amplifier provides Class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. Using a Class D architecture, the MAX9741 delivers 12W continuous output power into 8Ω loads. Modulation and switching schemes render the traditional Class D EMI suppression output filter unnecessary.

The MAX9741 offers two modulation schemes: a fixed-frequency mode (FFM), and a spread-spectrum mode (SSM) that reduces EMI-radiated emissions due to the modulation frequency. The device utilizes a fully differential architecture, a full bridged output, and offers comprehensive click-and-pop suppression.

The MAX9741 features high 80dB PSRR, low 0.07% THD+N, and SNR in excess of 100dB. Short-circuit and thermal-overload protection prevent the device from being damaged during a fault condition. The MAX9741 is available in a 56-pin TQFN (8mm x 8mm x 0.8mm) package. The MAX9741 is specified over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX9741: Simplilfied Block Diagram MAX9741: Simplilfied 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.