Software Operation - Analog Devices EVAL-AD5678DBZ User Manual

EVAL-AD5678DBZ User Guide

SOFTWARE OPERATION

The software for the AD5678
to the DAC REGISTER of the DAC.
Write to Input Register
Click Write to Input Register to load the code of the input data
control to the input register of the selected DAC in the DAC
selection box.
Update DAC Register from Input Register
Click Update DAC Register from Input Register to copy the
value in the input register to the corresponding DAC register.
The DAC outputs are automatically updated with the appropriate
voltage.
Write to Input and DAC Registers
Click Write to Input and DAC Registers to load the code of the
input data control to the input register and DAC register of the
selected DAC. The DAC outputs are automatically updated with
the appropriate voltage.
LDAC Control
Click Pulse LDAC to bring the LDAC pin low and then back
high. This action copies the data from the input register to the
DAC register, and the output updates accordingly.
Alternatively, the LDAC pin can be set to logic high or logic low
by selecting the corresponding LDAC HIGH or LDAC LOW
option.
Figure 4. AD5678 Evaluation Software Main Window
allows the user to program values
Power-Down Control
Each DAC can be powered down individually. Click the POWER-
DOWN LOGIC blue progressive disclosure option to access the
Powerdown Configuration window, as shown in Figure 5. The
selected DAC can operate in normal operation or one of the three
different power-down, pull-down termination options. When the
power-down setting for each DAC is selected, click OK to write
the appropriate values to the AD5678.
Figure 5. Powerdown Configuration Window
Rev. A | Page 5 of 13
UG-987