Features and Benefits

  • Filterless Operation Class D Amplifier Passes FCC Class B Radiated Emissions
  • 2.5V to 5.5V Single-Supply Operation
  • 0.1µA (typ) IC Shutdown Current
  • Drives 1.2W into 8Ω Speaker
  • Drives 80mW into 16Ω Headphone
  • Low 0.015% THD+N
  • Selectable Gain Options
  • Selectable 3-Way Input Mixer/Multiplexer
  • Selectable Switching Frequency
  • Also Evaluates MAX9771
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Details

The MAX9770 evaluation kit (EV kit) is a fully assembled and tested circuit board that uses the MAX9770, a low-EMI, filterless class D, bridge-tied-load (BTL) speaker amplifier with an 80mW stereo DirectDrive® headphone amplifier. Designed to operate from a 2.5V to 5.5V power supply, the EV kit is capable of delivering 1.2W into an 8Ω load with efficiency up to 85%.


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