EVAL-ADF4108EBZ1 Datasheet, PDF (8/20 Pages) Analog Devices – PLL Frequency Synthesizer

ADF4108
TYPICAL PERFORMANCE CHARACTERISTICS
FREQ UNIT:
GHz KEYWORD: R
PARAM TYPE: s
DATA FORMAT: MA
Freq
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
MAGS11
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
ANGS11
–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
Freq
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
MAGS11
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
ANGS11
–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
Figure 4. S Parameter Data for the RF Input
0
V_DD = 3.3V
–5
–10
T_A = +85°C
–15
T_A = +25°C
–20
–25
–30
–35
1
T_A = –40°C
2
3
4
5
6
7
8
9
RF INPUT FREQUENCY (GHz)
Figure 5. RF Input Sensitivity
–50
MARKER 1 1kHz
–60
–82.51dBc/Hz
–70
1
–80
–90
–100
–110
–120
–130
CARRIER POWER –5.23dBm
V_DD = 3.3V, V_P = 5V
I_CP = 5mA
PFD FREQUENCY = 1MHz
LOOP BANDWIDTH = 50kHz
–140 _{PHASE NOISE = –82dBc/Hz @ 1kHz}
VCO = ZCOMM CRO8000Z
–150
100Hz
FREQUENCY OFFSET
10MHz
Figure 6. Phase Noise at 7.9 GHz
Data Sheet
0
V_DD = 3.3V, V_P = 5V
1R
I_CP = 5mA
PFD FREQUENCY = 1MHz
–20 ^{LOOP BANDWIDTH = 30kHz}
RES BANDWIDTH = 3kHz
VIDEO BANDWIDTH = 3kHz
AVERAGES = 1
–40 ^{OUTPUT POWER = –0.3dBm}
VCO = ZCOMM CRO8000Z
MARKER 1 1MHz
–82.091dBc
–60
–80
–100
CENTER 7.9GHz
RES BW 24kHz
VBW 24kHz
1
SPAN 2.5MHz
Figure 7. Reference Spurs at 7.9 GHz
6
5
4
V_P = 5V
3
I_CP SETTLING = 5mA
2
1
0
–1
–2
–3
–4
–5
–6
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V_CP (V)
Figure 8. Charge Pump Output Characteristics
–120
–130
V_DD = 3V
V_P = 5V
–140
–150
–160
–170
–180
10k
100k
1M
10M
PHASE FREQUENCY DETECTOR (Hz)
100M
Figure 9. Phase Noise (Referred to CP Output) vs. PFD Frequency
Rev. B | Page 8 of 20