EVAL-AD5678DBZ User Guide
UG-987
Rev. A | Page 5 of 13
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Figure 4.
AD5678 Evaluation Software
Main Window
SOFTWARE OPERATION
The software for the
AD5678
allows the user to program values
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.
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
.
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52
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00
5
Figure 5.
Powerdown Configuration
Window
