Block Diagram And Description - Analog Devices EVAL-AD8460SDZ User Manual

AD8460
Evaluation Board User Guide
Figure 17. AD8460 ACE Plugin Board View

Block Diagram and Description

This section describes the main functions of the block diagram. The AD8640 data sheet gives a full description of each
register and its settings. Some blocks and their functions are described here.
DAC and Input Mode Switch
This block allows to select the input of the MUX and sleep/wake the DAC. Select arbitrary waveform generation (AWG)
or analog pattern generation (APG).
Output Voltage Levels
In the APG mode, a pattern of up to 16 discrete DC voltage levels can be loaded serially into the memory through the
SPI. The pattern depth parameter indicates the number of levels the AD8460 reads from the memory to create a repeating
pattern.
Sleep/Wake
This button toggles the AD8460 in and out of SLEEP mode.
Shutdown Indicator
This button and LED indicator light up green in normal operation and red when the part goes into shutdown.
Shutdown Reset
After a shutdown event due to a fault condition, reset the shutdown feature to turn the AD8460 back on. This button resets
the shutdown feature by writing a 1 and then a 0 to bit[7] of 0x00.
Protection Panel
This panel allows to enable individually parameter protection. To enable protection for a given fault type, click the
corresponding Enable Protection checkbox. Each fault type is mapped to an indicator on the GUI. Also specify the
corresponding thresholds in Desired Value fields to trigger an alarm and shut down the high voltage driver. To clear
alarms, make sure the fault event is gone, and the part's shutdown feature is reset. Click Clear All Alarms to clear the
alarm registers and indicators.
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