Datasheet

_________________________________________________________________ Maxim Integrated Products 8
Evaluates: MAX5723/MAX5724/
MAX5725A/MAX5725B
MAX5725A Evaluation Kit
Interface Watch Dog
Use the Mask checkbox, Timeout edit box, and Safety
Level radio buttons to set the watchdog. The timeout
time range that can be entered into the edit box is 1ms
to 4095ms. The user must allow enough timeout time to
send data to the DAC(s). It is recommended that the user
set the timeout time to the maximum time of 4095ms,
because the time Windows takes to communicate with
the part may vary. In addition, configure the DAC output
settings before pressing the EXECUTE button. The IRQ
circle changes from white to red when the IRQ signal
goes low. Refer to MAX5725A IC data sheet for detailed
description.
Configuration
The configuration command includes the Watch Dog
radio buttons and the GATE_ENB, LDAC_ENB, and
CLEAR_ENB checkboxes for selected DAC(s). See the
Configuration Status tab sheet to monitor the settings
on each DAC. Refer to MAX5725A IC data sheet for
detailed description.
Power
The power command is selectable for individual DACs.
When a DAC is selected, the channel is active. Other
options include powering down with 1kI termination
to GND, 100kI termination to GND, and high imped-
ance. Once the appropriate selection is made, press the
EXECUTE button.
Reset
The reset command allows the user to set or clear the
gate, refresh or reset the watchdog timer, or issue a soft-
ware reset or clear. Refer to MAX5725A IC data sheet for
detailed description.
Default
The default command allows the user to set the default
settings for individual DACs. Refer to MAX5725A IC data
sheet for detailed description.
Advanced User Interface
There are two methods for communicating with the IC.
The first is through the window shown in Figure 2. The
second is through the Advanced User Interface win-
dow shown in Figure 4. The Advanced User Interface
window becomes available by selecting the Options
| Interface (Advanced User) menu item and allows
execution of serial commands manually.
This interface is not recommended unless the user has to
change individual bits in the interface.
Figure 5. Advanced User Interface Window (3-Wire Interface Tab)