Evaluation Board User Guide
EVALUATION BOARD SOFTWARE
SOFTWARE INSTALLATION AND SETUP
The evaluation board software is provided on the CD that
accompanies the board. To install the software,
1.
Click the setup.exe file.
2.
Follow the on-screen instructions. The software is installed
in a default directory called C:/Program Files/Analog
Devices/ADF4x5x.
3.
To run the software, click ADF_Frac_Rev2_7.exe.
4.
Before the main window appears (see Figure 5), the device
window opens, prompting you to choose the device to
evaluate.
5.
Select ADF4156 and click OK.
SOFTWARE OPERATION
When the main window (shown in Figure 5) opens, perform
the following tasks:
1.
In the left RF Section panel in the window, click REF IN
Frequency. When a new window appears, change the
reference frequency to 10 MHz.
Figure 5. Evaluation Software, Main Window
2.
3.
Other features can now be examined. For example, to change
the VCO output frequency and/or channel spacing, click RF
VCO Output Frequency. The output frequency window then
appears, and the values can be changed. The on-board loop filter
has been designed for a charge pump current of 0.3125 mA.
To examine the cycle slip reduction feature, click the CSR
Disabled button in the main window. Note that the PFD duty
cycle must be 50:50, and the charge pump current must be set
to minimum to take advantage of this feature. See the ADF4156
data sheet for more information on cycle slip reduction.
Rev. A | Page 5 of 8
Click Update R0 and R1 (Normal Mode) and then click
Exit Window. Note that these fields have been replaced by
the Rx Updated fields shown in blue.
Click Update All Registers (this has been replaced by All
RF Registers Updated in Figure 5). The data is now set up.
The window should look like Figure 5.
UG-171
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