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Evaluation System/Evaluation Kit for the MAX9850

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Active: In Production.


The MAX9850 evaluation system (EV system) consists of a MAX9850 evaluation kit (EV kit), a companion Maxim command module (CMOD232) interface board, and software.

The MAX9850 EV kit is a fully assembled and tested surface-mount printed circuit board (PCB) that evaluates the MAX9850 headphone stereo DAC with integrated headphone driver. The EV kit is designed to be driven by any digital audio Sony/Philips Digital Interface (S/PDIF) audio source and can be optionally configured to accept generic digital audio or I²S-compatible signals. The EV kit provides RCA jacks for connecting analog input signals. A 3.5mm headphone jack allows for easy connection of headphones to the PCB.

The Maxim command module interface board (CMOD232) allows a PC to use its serial port to emulate an I²C 2-wire interface. Windows® 98/2000/XP-compatible software, which can be downloaded from the Maxim website, provides a user-friendly interface to exercise the features of the MAX9850. The program is menu driven and offers a graphical user interface (GUI) with control buttons and a status display.

The MAX9850 EV system (MAX9850EVCMOD2#) includes both the EV kit and the CMOD232 interface board. Order the MAX9850 EV kit (MAX9850EVKIT#) if you already have a command module interface.

Data Sheet

Download this datasheet in PDF formatDownload Rev 3 (PDF, 916kB)
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NOTE: This product uses the following:
MAX9850 EVKIT Software

Key Features

  • 1.8V to 3.6V Single-Supply Operation
  • I²C-Compatible 2-Wire Serial Interface
  • Selectable Optical/Electrical S/PDIF Input
  • On-Board 12MHz Crystal Oscillator
  • On-Board Digital Audio Receiver
  • No Detectable Clicks or Pops
  • Easy-to-Use Menu-Driven Software
  • Assembled and Tested
  • Includes Windows 98/2000/XP-Compatible Software and Demo PCB


  • Cell Phones/Smartphones
  • MP3/Portable Multimedia Players
  • Portable DVD Players

Notes and Comments

Note: The MAX9850 EV kit software is provided with the MAX9850EVKIT; however, the CMOD232 board is required to interface the EV kit to the computer when using the included software.

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Document Ref.: 19-3430 Rev 3; 2009-03-27
This page last modified: 2011-11-10