Datasheet

UG-108 Evaluation Board User Guide
Rev. A | Page 12 of 24
EVALUATION AND TEST
To evaluate and test the performance of the ADF4002, use the
following procedure:
1. Ensure that a VCO and loop filter are inserted on the
board. Use ADIsimPLL to generate the loop filter
component values.
2. Install the SDP-S software drivers. Connect the evaluation
board to a PC using the supplied USB cable. Follow the
hardware driver installation procedure that appears.
3. Connect the SDP-S connector to the EV-ADF4002SD1Z.
4. Connect a reference signal to J11 (or J5, if an edge mount
connector is inserted).
5. Connect a spectrum analyzer to Connector J2.
6. Run the Int-N software.
7. Select the SDP board and the ADF4002 device in the Select
Device and Connection tab of the software front panel
window.
8. In the software window, set the VCO center frequency
(Figure 19 uses a 400 MHz VCO). Set the PFD frequency
as defined in ADIsimPLL, and program the reference
frequency to equal that supplied to Connector J11 (or the
TCXO). See Figure 20 for the suggested setup.
9. Measure the output spectrum. Figure 19 shows a 400 MHz
output.
Figure 19. Spectrum Analyzer Display
Figure 20. Typical Evaluation Setup
08896-019
SPECTRUM
ANALYZER
PC
EXTERNAL DC
GND
EXTERNAL DC
SUPPLY
TCXO
VCO
LOOP
FILTER
LOCK DETECT LED
PLL
POWER
LED
EXTERNAL
POWER
SWITCH
SDP CONNECTOR
REFERENCE IN/
REFERENCE OUT
PLL
SDP-S BOARD
POWER
SUPPLIES
SIGNAL
GENERATOR
08896-020