Datasheet

ADF4193 Data Sheet
Rev. F | Page 10 of 32
05328-042
FREQUENCY (Hz)
NOISE (nV/ Hz)
1k 10k 100k 1M
1
10
100
1000
10M
7nV/ Hz @ 20kHz
Figure 16. Voltage Noise Density Measured at the Differential Amplifier Output
05328-014
DRAIN VOLTAGE (V)
R
ON
(Ω)
0 1 2 3 4
0
100
70
90
80
60
50
40
30
20
10
5
+85°C
SW3
–40°C
+25°C
–40°C
+25°C
+85°C
SW1/
SW2
TUNING VOLTAGE RANGE
Figure 17. On Resistance of Loop Filter Switches SW1/SW2 and SW3
05328-044
PHASE CODE
PHASE DETECTOR OUTPUT (V)
0
0
1.8
1.5
1.2
0.9
0.6
0.3
13011710491786552392613
MEASURED USING AD8302 PHASE DETECTOR
Y-AXIS SCALE: 10mV/DEGREE
RF = 1880MHz, PFD = 26MHz, MOD = 130
X-AXIS SCALE: 2.77°/STEP
Figure 18. Detected RF Output Phase for Phase Code Sweep from 0 to MOD
05328-045
INTERVAL BETWEEN R0 WRITES SHOULD BE A MULTIPLE OF MOD
REFERENCE CYCLES (5µs) FOR COHERENT PHASE MEASUREMENTS
AGILENT
HP8663A
SIG. GEN.
TEKTRONIX
TDS714L
OSCILLOSCOPE
ADF4193
EVAL BOARD
104MHz
5dBm
10MHz
EXT REF
1880MHz
1805 1880MHz
RF
OUT
REF
IN
R&S
SMT03
SIG. GEN.
INPA
AD8302
EVB
VPHS
INPB
Figure 19. Test Setup for Phase Lock Time Measurement