10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers

10W Stereo/15W Mono Class-D Amplifier Ideal for Flat-Panel TV and PC-Display Applications

Please check latest availability status for a specific part variant.


The MAX9703/MAX9704 mono/stereo Class D audio power amplifiers provide Class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. Using a Class D architecture, these devices deliver up to 15W while offering up to 78% efficiency. Modulation and switching schemes render the traditional Class D output filter unnecessary.

The MAX9703/MAX9704 offer 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 comprehensive click-and-pop suppression.

The MAX9703/MAX9704 feature high 80dB PSRR, low 0.07% THD+N, and SNR in excess of 95dB. Short-circuit and thermal-overload protection prevent the devices from being damaged during a fault condition. The MAX9703 is available in a 32-pin TQFN (5mm x 5mm x 0.8mm) package. The MAX9704 is available in a 32-pin TQFN (7mm x 7mm x 0.8mm) package. Both devices are specified over the extended -40°C to +85°C temperature range.
MAX9703, MAX9704: Block Diagram MAX9703, MAX9704: Block Diagram Enlarge+

Key Features

  • Filterless Class D Amplifier
  • Unique Spread-Spectrum Mode Offers 5dB Emissions Improvement Over Conventional Methods
  • Up to 78% Efficient (RL = 8Ω)
  • Up to 88% Efficient (RL = 16Ω)
  • 15W Continuous Output Power into 8Ω (MAX9703)
  • 2x10W Continuous Output Power into 8Ω (MAX9704)
  • 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 Packages
    • 32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703
    • 32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704


  • Desktop PCs
  • Hands-Free Car Phone Adapters
  • LCD Monitors
  • LCD Projectors
  • LCD TVs

MAX9714EVKIT: Evaluation Kit for the MAX9704 and MAX9714
Product Reliability Reports: MAX9704.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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