Features and Benefits

  • 2.4V to 5.5V Single-Supply Operation
  • Drives Two Channels at 70mW per Channel into a 16Ω load, 130mW per Channel into a 32Ω load
  • ≤ 2µA Shutdown Current
  • Evaluates the MAX9722A or MAX9722B (IC and Component Replacement Required)
  • Small 16-Pin TQFN (3mm x 3mm) Package
  • Available in 16-Pin TSSOP Package
  • Fully Assembled and Tested

Product Details

The MAX9722A evaluation kit (EV kit) is a fully assembled and tested circuit board that uses the MAX9722A to drive a stereo headphone in portable audio applications. The MAX9722A is a differential stereo headphone driver with DirectDrive®. Maxim's DirectDrive technology eliminates the need for DC-blocking capacitors on the output of the amplifier. Designed to operate from a 2.4V to 5.5V DC power supply, the EV kit is capable of delivering up to 70mW per channel into a 16Ω load or 130mW per channel into a 32Ω load and 0.009% THD+N at 1kHz.

The EV kit can also be used as a line driver that provides 2VRMS into a 1kΩ load from a single 5V supply. The MAX9722A EV kit also evaluates the MAX9722B.


  • Cell Phones
  • Flat-Panel Monitors
  • MP3 Players
  • Notebook and Desktop PCs
  • PDAs
  • Portable Audio Equipment
  • Smartphones