Datasheet

Evaluation Board User Guide UG-405
Rev. 0 | Page 7 of 20
EVALUATION AND TEST
To evaluate and test the performance of the ADF41020, use the
following steps:
1. Install the Analog Devices Int-N software.
2. Use ADIsimPLL to generate the loop filter component
values if a different loop filter is required.
3. Solder new filter components specified by ADIsimPLL.
4. Install the USB software drivers. Connect the evaluation
board to a PC using the supplied USB cable. Follow the
hardware driver installation procedure that appears.
5. Connect the USB connector to the EV-ADF41020EB1Z.
6. Connect a spectrum analyzer to EXT_VCOOUT.
7. Run the Int-N software.
8. Select the USB board and the ADF41020 device in the
Select Device and Connection tab of the software front
panel window. On the Main Controls tab, set the VCO
center frequency (Figure 6 uses a 12.5 GHz VCO). Set the
PFD frequency as specified in ADIsimPLL, and program
the reference frequency to 100 MHz. See Figure 7 for the
suggested setup.
9. Measure the output spectrum. Figure 6 shows a 12.5 GHz
output.
10675-020
Figure 6. Spectrum Analyzer Display