Evaluation System for the MAX98357A and MAX98357B (TQFN)

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The MAX98357 development board (DEV board) is a fully assembled and tested PCB that evaluates the MAX98357 I2S digital input Class D power amplifier. The DEV board operates from a single 2.5V to 5.5V DC power supply and is capable of delivering 3.2W into a 4Ω load. The device outputs can be connected directly to a speaker load for filterless applications. However, a filter can be added to ease evaluation. The MAX98357A accepts standard I2S data and the MAX98357B accepts left-justified digital audio data. Both versions also support 8-channel TDM audio data.

The MAX98357 evaluation system (EV system) includes the MAX98357 DEV board and Maxim Integrated’s audio interface board (MAXAUDINT001#).

The MAXAUDINT001# board provides an easy-to-use USB audio-to-I2S converter. This allows for any computer to become a digital audio source, which can be used to evaluate the devices. The MAXAUDINT001# board can also be used to power the MAX98357. This allows for a complete evaluation from a single USB connection.

Key Features

  • 2.5V to 5.5V Single-Supply Operation
  • Only a Single External Component (VDD Capacitor) Required in Many Applications
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (3db, 6dB, 9dB, 12dB, and 15dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Optional Class D Output Filters for Ease of Evaluation
  • Proven PCB Layout
  • Fully Assembled and Tested


  • Cellular Phones
  • Notebook and Netbook Computers
  • Tablets
Request Reliability Report for: MAX98357EVSYSTQFN 
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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