Evaluation Kit for the MAX9722A and MAX9722B

Please check latest availability status for a specific part variant.


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.

Key Features

  • 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


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

Quality and Environmental Data

Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

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.

Quality Management System >
Environmental Management System >


Related Resources

Boosted Class-D Amplifier with Integrated Dynamic Speaker Management

  • Integrated Speaker Current and Voltage Sense Requires no External Components
  • Integrated Programmable 10V Boost Converter
  • Integrated Dynamic Speaker Management