UG-515 Datasheet, PDF (12/28 Pages) Analog Devices – Full-featured evaluation board

EVAL-ADAS3023EDZ
ADAS3023 configuration register (CFG). Note that
after changing any of the CFG register, this button
must be clicked for the new setting to take effect.
4. The CFG controls (labeled 4 in Figure 10) are used to set
the CFG. See the Software Controls section.
5. Sampling Frequency is used to set the sample frequency.
Enter the sample rate in kilohertz. Units, such as .5 k (case
sensitive) for 500,000 Hz (maximum 500 kSPS), can be
used.
Configuring the ADAS3023 Device
The ADAS3023 device is configurable using a 16-bit on-chip
register, CFG (refer to the device data sheet for more details).
Remember to select Update CFG after choosing CFG details
for the new setting to take place. Configure all the selections
and then select Update CFG.
Input Channel
To select the input channel, make a selection from the pull-
down menu.
Evaluation Board User Guide
Programmable Gain
The most useful and innovative feature of the ADAS3023 is the
on-chip programmable gain instrumentation amplifier, which
allows four (±2.56 V to ±20.48 V) input ranges. Select the
appropriate setting for the input voltage span. Do not include
any common-mode signals, which are rejected. Note that the
ADAS3023 device does not need the usual level shifting that
is common in SAR ADC systems. The ADAS3023 device can
accommodate any input type, fully differential, single ended,
bipolar, and so on.
Figure 11. Input Channel
Channel Pairing
The channels can be paired (up to 4 maximum) or all channels
can be referenced to the COM input. Note that any input
channel including COM has an absolute input range of VDDH
− 2.5 V and VSSH + 2.5 V (± high voltage supplies, usually
external).
Figure 12. Channel Pairing
Figure 13. Programmable Gain
Software Controls
Within any of the chart panels, these controls are used to
control the display.
Locks the graph axis to automatically fit the data.
Uses last axis set by user.
, Rescales the axes to the automatic values.
, Set the axes properties, such as format, precision,
color, and so on.
Displays the cursor.
Is used for zooming in and out.
Is used for panning.
Is used to set various graph properties such as graph
type, colors, lines, and so on.
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