Analog Devices AD7400A Evaluation Board EVAL-AD7400AEDZ EVAL-AD7400AEDZ Datenbogen
Produktcode
EVAL-AD7400AEDZ
EVAL-AD7400A/AD7401A
Rev. 0 | Page 8 of 16
0
76
43
-00
2
AD7400A
Figure 2. AD7400A Summary Window
SOFTWARE OPERATION
With the hardware set up, you can now use the software to
control the EVAL-CED1Z and the EVAL-AD7400A/AD7401A.
To launch the software from the Analog Devices menu, click
the AD7400A/AD7401A submenu, then click the AD7400A/
AD7401A
control the EVAL-CED1Z and the EVAL-AD7400A/AD7401A.
To launch the software from the Analog Devices menu, click
the AD7400A/AD7401A submenu, then click the AD7400A/
AD7401A
icon. Figure 2 displays the main window that is
opened. If an error message appears, click OK and restart the
application after checking the connection between the adapter
board and the USB port on the PC. Also check that the USB
device is identified by the Device Manager as detailed in the
Installing the Software section.
application after checking the connection between the adapter
board and the USB port on the PC. Also check that the USB
device is identified by the Device Manager as detailed in the
Installing the Software section.
The software that controls the EVAL-CED1Z and, therefore,
the EVAL-AD7400A/AD7401A, has two main windows. Figure 2
shows the window that appears when the software is run. The
main function of this window is to allow you to read a predeter-
mined number of samples from the evaluation board and display
them in both the time and frequency domain. The screen can
be divided into three main sections: Part Information, Data
Capture
the EVAL-AD7400A/AD7401A, has two main windows. Figure 2
shows the window that appears when the software is run. The
main function of this window is to allow you to read a predeter-
mined number of samples from the evaluation board and display
them in both the time and frequency domain. The screen can
be divided into three main sections: Part Information, Data
Capture
, and Linearity. The top portion of the screen contains
the menu bar, including the Part Information tab on the left
hand side of the screen and a Data Capture tab in the center,
which consists of a number of subtabs: Waveform, Histogram,
FFT
hand side of the screen and a Data Capture tab in the center,
which consists of a number of subtabs: Waveform, Histogram,
FFT
, and Summary.
The Linearity tab is also located in the center and enables you
to generate a linearity plot for the device.
to generate a linearity plot for the device.
USING THE SOFTWARE
Menu Bar
The menu bar consists of the following menus: File, Edit,
Operate
Operate
, Tools, Window, and Help.
Part Information Tab
The Part Information tab allows you to select a variety of
configurations, such as Resolution, Decimation Rate, and
Data Format
configurations, such as Resolution, Decimation Rate, and
Data Format
.
• Resolution: The software automatically sets the resolution
to 16 bits for the AD7400A or AD7401A.
• Decimation Rate: The default decimation rate for the
sinc3 filter is 256. A variety of different decimation rates
can be selected from the pull-down menu.
can be selected from the pull-down menu.
• Data Format: The data format is set to binary by default.
The Part Information tab also includes a Busy status indicator
which lights up when the evaluation board is busy. There is also
an Exit button that allows you to quit the program.
which lights up when the evaluation board is busy. There is also
an Exit button that allows you to quit the program.