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Evaluates: MAX11900/MAX11901/

MAX11902/MAX11903/

MAX11904/MAX11905

MAX11905 Evaluation Kit

General Description of Software

The main window of the MAX11905 EV kit software con-

tains five tabs:

SYSTEM, SCOPE, DMM, HISTOGRAM,

and

FFT. The SYSTEM tab provides control to com-

municate with the ZedBoard, SPI, and the IC registers.

The other four tabs are used for evaluating the IC’s high-

speed ADC.

SYSTEM Tab

When all connections are made on the system and

are fully powered, the

SYSTEM tab sheet displays the

correct IP address, port, and the lower status bar

displays as shown Figure 1. These are all indicators that the

system and GUI are ready for communication.

Before proceeding, the connector used on the ZedBoard

should be connected to either the FMC or peripheral module

connector on the EV kit. If the FMC connector is used, all

SCLK frequencies are applicable. If the peripheral module

connector is used, the maximum allowed frequency is

37.5MHz. For the

Clock Source selection, the ZedBoard

internal clock is always a valid option. If the external

clock is selected, an external clock must be applied at the

DCLK_IN SMA on the EV kit. The Sync-Out CLK selection

is used to synchronize the signal generator with a 10MHz

input. See the Sync Input and Sync Output section for

more information. Once the above configurations are

completed, adjust to the desired sampling rate, reference

voltage, and number of samples, and then click on the

SET button.

Also in this tab are the IC register controls. The Mode

MAX11905

Mode Register Configuration group box in the center, or

the

Mode control on the right. All other registers are read-

only and are updated by clicking on the appropriate

Read

button. The first and second REF must be shorted on the

board to use the REF controls.

1st REF BUF and 2nd

REF BUF are internally set to the same value. The GUI

forces these two controls to the same value, regardless

of the user’s choice.

Figure 1. MAX1190X EV Kit Main Window (SYSTEM Tab Sheet)

Figure 1

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