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ADF4372 Datasheet(PDF) 12 Page - Analog Devices

Part # ADF4372
Description  Microwave Wideband Synthesizer with Integrated VCO
PDF  47 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADF4372 Datasheet(HTML) 12 Page - Analog Devices

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ADF4372
Data Sheet
Rev. 0 | Page 12 of 47
20
15
10
5
0
–5
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
0.5
1.5
2.5
3.5
4.5
5.5
6.5
7.5
8.5
FREQUENCY (GHz)
RAW MEASUREMENT
DE-EMBEDDED MEASUREMENT
Figure 13. RF8P and RF8N Output Power, De-Embedded Board and Cable
Measurement, Combined Using Balun (7.4 nH Inductors, 10 pF AC Coupling
Capacitors Limit Power at Low Frequencies)
–70
–80
–90
–100
–75
–85
–95
–105
–110
3.5
4.0
5.0
6.0
7.0
8.0
4.5
5.5
6.5
7.5
8.5
CARRIER FREQUENCY (GHz)
PFD FREQUENCY = 61.44MHz
PFD FREQUENCY = 122.88MHz
PFD FREQUENCY = 153.6MHz
Figure 14. PFD Spurious Sweep, fPFD = 61.44 MHz, Loop Filter Bandwidth =
100 kHz
0
–80
–70
–60
–50
–40
–30
–20
–10
0.5 1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
1.5
2.5
3.5
4.5
5.5
6.5
7.5
8.5
CARRIER FREQUENCY (GHz)
SECOND HARMONIC
THIRD HARMONIC
FOURTH HARMONIC
FIFTH HARMONIC
SIXTH HARMONIC
Figure 15. RF8P and RF8N Output Harmonics, De-Embedded Board and Cable
Measurement, Combined Using Balun
–35
–135
–125
–115
–105
–95
–85
–75
–65
–55
–45
3.5
4.5
5.5
6.5
7.5
8.5
CARRIER FREQUENCY (GHz)
61.44MHz
122.88MHz
153.6MHz
Figure 16. Integer Boundary Spurious Sweep vs. Carrier Frequency,
fPFD = 61.44 MHz, 122.88 MHz, and 153.6 MHz,
Loop Filter Bandwidth = 100 kHz
6
–8
–6
–4
–2
0
2
4
7
9
11
13
15
8
10
12
14
16
17
FREQUENCY (GHz)
RAW MEASUREMENT
DE-EMBEDDED MEASUREMENT
Figure 17. RF16P and RF16N Output Power, De-Embedded Board and Cable
Measurement, Combined Using Balun
–35
–40
–45
–50
–55
–60
–65
–70
–75
7
9
11
13
15
8
10
12
14
16
17
CARRIER FREQUENCY (GHz)
–40°C, VCO SUPPLY = 4.80V
+105°C, VCO SUPPLY = 4.80V
–40°C, VCO SUPPLY = 5.30V
+105°C, VCO SUPPLY = 5.30V
+25°C, VCO SUPPLY = 5.05V
Figure 18. RF16P and RF16N VCO Feedthrough, De-Embedded Board and
Cable Measurement, Combined Using Balun



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