Low-EMI, Class D Audio Power Amplifiers

The Maxim Class D Advantage

Spread-spectrum modulation and active emissions limiting enable our amplifiers to pass the EN 55022 EMI standard with up to 24 inches of unshielded cable and without external filtering. Learn how...
High integration eliminates many external support components. Integrated functionality in Maxim's Class D audio amplifiers includes:
• Robust Current- and Thermal-Overload Protection Circuitry
  
  
• Industry-Leading Click-and-Pop Suppression Circuitry
  
  
• Emissions-Limiting Technology
  
  
• Up to 0.01% THD+N and 80dB PSRR matches Class AB performance while offering Class D efficiencies of > 85%. Learn more...

• Application Note 3977: Class D Amplifiers: Fundamentals of Operation and Recent Developments   Abstract
• Application Note 3973: Maxim's Active-Emissions-Limiting Circuitry Demystified   Abstract
• Application Note 3881: Spread-Spectrum-Modulation Mode Minimizes Electromagnetic Interference in Class D Amplifiers   Abstract
• Application Note 3879: Thermal Considerations for a Class D Amplifier   Abstract