MAX5581 Evaluation Kit/Evaluation System

4

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CONTROL

DESCRIPTION

Allows the user to select the active tab.

Shows the CMODUSB debugging tools.

Gives access to the help file and the about box.

Shows the code and voltage for the input register of DAC A–DAC D.

Shows the code and voltage for the output register of DAC A–DAC D.

Shows the shutdown mode and shutdown status of DAC A–DAC D.

Shows the settling time mode of DAC A–DAC D.

When checked, automatically reads and updates all the register information for the registers that are

permanently on the bottom of the software’s main window. A flashing asterisk indicates AutoRead All

Registers is active.

Allows the user to enter the actual measured on-board reference value or the actual value of a user-

supplied external reference. Pressing the Set Vref button uses the value typed in the edit to calculate

the corresponding input and output register voltages.

Allows the user to enter the gain of the output amplifier. Pressing the Set Gain button uses the value

typed in the edit box to calculate the corresponding input and output register voltages. The MAX5581

EV kit board has on-board resistors that set the default gain to 2. To change the gain, modify the on-

board gain-setting resistors by referring to the MAX5581 data sheet before changing the gain in the

software. For unity-gain device evaluation, set the gain to 1 and remove the output feedback resistors to

prevent loading the output.

Resets all the registers and status information that is permanently on the bottom of the software’s main

window as shown in Figure 1.

Table 1. MAX5581 EV Kit Software—Main Window Control Descriptions