Datasheet

UG-171 Evaluation Board User Guide
Rev. B | Page 12 of 24
EVALUATION AND TEST
To evaluate and test the performance of the ADF4156, use the
following procedure:
1. Install SDP-S software drivers and ADF4153-4-6-7
software. Connect the evaluation board to a PC using the
supplied USB cable. Follow the hardware driver installation
procedure that appears.
2. Connect SDP-S connector to EV-ADF4156SD1Z.
3. Connect spectrum analyzer to Connector J2.
4. Run the ADF4153-4-6-7 software.
5. Select the SDP board and the ADF4156 device in the Select
Device and Connection tab of the software front panel
window.
6. In the software window, set the VCO center frequency
(the example in Figure 19 uses 5800 MHz). Set the PFD
frequency to 10 MHz, and program the reference fre-
quency to equal 10 MHz. The charge pump current should
equal 0.31 mA. See Figure 20 for the suggested setup.
7. Measure the output spectrum. Figure 19 shows a
5800 MHz output.
Figure 19. Spectrum Analyzer Display
Figure 20. Typical Evaluation Setup
0.0 S 1.6 mS
10 kHz 100 kHz 1 MHz 10 MHz1 kHz 30 MHz
-100
LoopBW
Spur Power (dBc)
A
SPR OFF
TH 0dB
Frequency Offset
1
Running ...
R&S FSUP Signal Source Analyzer LOCKED
Settings Residual Noise [T1 w/o spurs] Phase Detector +0 dB
Signal Frequency: 5.799930 GHz Int PHN (1.0 k .. 30.0 M) -34.1 dBc
Signal Level: 1.2 dBm Residual PM 1.607 °
Cross Corr Mode Harmonic 1 Residual FM 2.669 kHz
Internal Ref Tuned Internal Phase Det RMS Jitter 0.7698 ps
Phase Noise [dBc/Hz] Marker 1 [T1]
RF Atten 5 dB 4.98047 kHz
Top -60 dBc/Hz -82.98 dBc/Hz
low
Date: 25.JAN.2012 16:39:48
1 CLRWR
SMTH 1%
2 CLRWR
-80
-120
-140
-160 -160
-140
-120
-100
-80
09173-019
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
09173-020