MAX5581 Evaluation Kit/Evaluation System

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Quick Start

Recommended Equipment

• MAX5581EVCMODU EV system (MAX5581EVKIT

and CMODUSB command module with USB

cable included)

• Digital voltmeter (DVM)

•A user-supplied Windows 98/2000/XP PC with an

available USB port

Procedure

Do not turn on the power until all connections

are made.

1) Verify jumper J1 on the CMODUSB module is con-

nected to pins 1-2. This sets the logic supply to 5V.

2) Verify that JU1 on the MAX5581 EV kit is set to 2-3

(DAC outputs are set to zero on power-up).

3) Verify that JU2 on the MAX5581 EV kit is set to 2-3

(UPIO1 connected to SPI MISO (DOUT) line).

4) Verify that JU6 on the MAX5581 EV kit is set to 1-2

(SPI data is clocked in on the rising edge of SCLK).

5) Connect the MAX5581 EV kit’s 40-pin female con-

nector (J1) to the CMODUSB module’s 40-pin male

connector (P4).

6) Install the MAX5581 evaluation software on your

computer by running the INSTALL.EXE program on

the installation CD-ROM. The program files are

copied and icons are created for them in the

Windows Start menu.

7) Connect the 5V power supply between the

MAX5581 EV kit’s AVDD and AGND pads. Turn on

the 5V power supply.

8) Connect the included USB cable from the PC to the

CMODUSB command module. A Building Driver

Database window will pop up in addition to a New

Hardware Found message. If you do not see any

window that is similar to the one described above

after 30s, try removing the USB cable from the

CMODUSB command module and reconnect it

again. Administrator privileges are required to

install the USB device driver on Windows 2000/XP.

9) Follow the directions of the Add New Hardware

Wizard to install the USB device driver. Choose the

Search for the best driver for your device option.

Specify the location of the device driver to be

C:\Max5581 using the Browse button.

10) Start the MAX5581 EV kit software by opening its

icon in the Start menu.

11) Using the Load Input and Output (From Shift)

Tab, press the Load All DACs button.

12) Verify that all Output Register Code and Voltage

labels update with 0x800 and 1.25V, respectively,

at the bottom of the MAX5581 EV kit software’s main

window.

13) Measure the voltage at OUTA (J2-1) using the DVM

and verify that the voltage is approximately 1.25V.

Detailed Description of Software

The evaluation software’s main window, shown in Figure

1, displays the voltage and code for all DAC input and

output registers. In addition, the main window also

shows the shutdown and settling time status for all of the

DACs. Table 1 describes the controls that are always

present on the evaluation software’s main window.