Datasheet

ADF4108 Data Sheet
Rev. E | Page 8 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
0.50000
0.60000
0.70000
0.80000
0.90000
1.00000
1.10000
1.20000
1.30000
1.40000
1.50000
1.60000
1.70000
1.80000
1.90000
2.00000
2.10000
2.20000
2.30000
2.40000
2.50000
2.60000
2.70000
2.80000
2.90000
3.00000
3.10000
3.20000
3.30000
3.40000
3.50000
3.60000
3.70000
3.80000
3.90000
4.00000
4.10000
4.20000
–17.2820
–20.6919
–24.5386
–27.3228
–31.0698
–34.8623
–38.5574
–41.9093
–45.6990
–49.4185
–52.8898
–56.2923
–60.2584
–63.1446
–65.6464
–68.0742
–71.3530
–75.5658
–79.6404
–82.8246
–85.2795
–85.6298
–86.1854
–86.4997
–88.8080
–91.9737
–95.4087
–99.1282
–102.748
–107.167
–111.883
–117.548
–123.856
–130.399
–136.744
–142.766
–149.269
–154.884
0.89148
0.88133
0.87152
0.85855
0.84911
0.83512
0.82374
0.80871
0.79176
0.77205
0.75696
0.74234
0.72239
0.69419
0.67288
0.66227
0.64758
0.62454
0.59466
0.55932
0.52256
0.48754
0.46411
0.45776
0.44859
0.44588
0.43810
0.43269
0.42777
0.42859
0.43365
0.43849
0.44475
0.44800
0.45223
0.45555
0.45313
0.45622
4.30000
4.40000
4.50000
4.60000
4.70000
4.80000
4.90000
5.00000
5.10000
5.20000
5.30000
5.40000
5.50000
5.60000
5.70000
5.80000
5.90000
6.00000
6.10000
6.20000
6.30000
6.40000
6.50000
6.60000
6.70000
6.80000
6.90000
7.00000
7.10000
7.20000
7.30000
7.40000
7.50000
7.60000
7.70000
7.80000
7.90000
8.00000
0.45555
0.46108
0.45325
0.45054
0.45200
0.45043
0.45282
0.44287
0.44909
0.44294
0.44558
0.45417
0.46038
0.47128
0.47439
0.48604
0.50637
0.52172
0.53342
0.53716
0.55804
0.56362
0.58268
0.59248
0.61066
0.61830
0.61633
0.61673
0.60597
0.58376
0.57673
0.58157
0.60040
0.61332
0.62927
0.63938
0.65320
0.65804
–159.680
–164.916
–168.452
–173.462
–176.697
178.824
174.947
170.237
166.617
162.786
158.766
153.195
147.721
139.760
132.657
125.782
121.110
115.400
107.705
101.572
97.5379
93.0936
89.2227
86.3300
83.0956
80.8843
78.0872
75.3727
73.9456
73.5883
74.1975
76.2136
77.1545
76.1122
74.8359
74.0546
72.0061
69.9926
Freq MAGS11 ANGS11
FREQ UNIT: GHz KEYWORD: R
PARAM TYPE: s
DATA FORMAT: MA
Freq MAGS11 ANGS11
06015-004
Figure 4. S Parameter Data for the RF Input
0
–35
–30
–25
–20
–15
–10
–5
1 98765432
RF INPUT POWER (dBm)
RF INPUT FREQUENCY (GHz)
V
DD
= 3.3V
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
06015-005
Figure 5. RF Input Sensitivity
–50
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
100Hz 10MHz
FREQUENCY OFFSET
PHASE NOISE (dBc/Hz)
CARRIER POWER –5.23dBm
V
DD
= 3.3V, V
P
= 5V
I
CP
= 5mA
PFD FREQUENCY = 1MHz
LOOP BANDWIDTH = 50kHz
PHASE NOISE = –82dBc/Hz @ 1kHz
VCO = ZCOMM CRO8000Z
06015-010
1
MARKER 1 1kHz
–82.51dBc/Hz
Figure 6. Phase Noise at 7.9 GHz
CENTER 7.9GHz
RES BW 24kHz
SPAN 2.5MHz
VBW 24kHz
OUTPUT POWER (dBm)
06015-011
V
DD
= 3.3V, V
P
= 5V
I
CP
= 5mA
PFD FREQUENCY = 1MHz
LOOP BANDWIDTH = 30kHz
RES BANDWIDTH = 3kHz
VIDEO BANDWIDTH = 3kHz
AVERAGES = 1
OUTPUT POWER = –0.3dBm
VCO = ZCOMM CRO8000Z
MARKER 1
1MHz
–82.091dBc
1
1R
0
–20
–40
–60
–80
–100
Figure 7. Reference Spurs at 7.9 GHz
6
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
5.00 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
V
CP
(V)
I
CP
(mA)
V
P
= 5V
I
CP
SETTLING = 5mA
06015-015
Figure 8. Charge Pump Output Characteristics
–120
–180
–170
–160
–150
–140
–130
100M10k 100k 1M 10M
PHASE FREQUENCY DETECTOR (Hz)
PHASE NOISE (dBc/Hz)
V
DD
= 3V
V
P
= 5V
06015-014
Figure 9. Phase Noise (Referred to CP Output) vs. PFD Frequency