
P
LL
s
-
s
M
T
5 - 7
HMC704LP4E
v03.1211
8 GHz fractionaL-n PLL
For price, delivery, and to place orders: Hittite Microwave Corporation,20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
figure 19. Modelled vs. Measured
Phase noise, fractional Mode [3]
figure 18. Modelled vs.
Measured Phase noise [4]
figure 17. integer Boundary Spur vs.
cP offset [3]
figure 22. integer Boundary Spurious at
8 GHz + 10 kHz vs. rf Power [3]
-180
-160
-140
-120
-100
-80
100
1000
10
4
10
5
10
6
10
7
10
8
Int
ff
fb
act Int
Hik Mode A
act fb
Predicted Act Int
Predicted Hik Mode A
OFFSET (Hz)
PH
ASE
N
O
ISE
(d
Bc
)
-234
-233
-232
-231
-230
-229
-228
-227
-24
-21
-18
-15
-12
-9
-6
-3
0
3
HiK int
HiK Mode A
HiK Mode B
RF POWER (dBm)
F
L
O
OR
F
O
M
-268
-267.5
-267
-266.5
-266
-24
-21
-18
-15
-12
-9
-6
-3
0
3
HiK int
HiK Mode A
HiK Mode B
RF POWER (dBm)
F
L
IC
KER
F
O
M
-75
-70
-65
-60
-55
-50
-15
-12
-9
-6
-3
0
3
5KHz
10KHz
RF POWER (dBm)
SPU
R
(d
Bc
)
-65
-60
-55
-50
-45
-40
-35
-30
-25
-600
-400
-200
0
200
400
600
Mode A
Mode B
HIK Mode A
HiK Mode B
OFFSET CURRENT (uA)
W
O
R
ST
SPU
R
(d
Bc
)
Recommended
Operating Region
HiK Mode B
Mode B
HiK Mode A
Mode A
figure 20. floor foM near 8 GHz vs.
rf Power and Mode
-180
-160
-140
-120
-100
-80
100
1000
10
4
10
5
10
6
10
7
10
8
HiK Int
Predicted HiK Int
OFFSET (Hz)
PH
ASE
N
O
ISE
(d
Bc
)
figure 21. flicker foM near 8 GHz vs.
rf Power and Mode
[3] VCO Near 8.6 GHz, Prescalar = VCO/2
[4] Active Fractional A Mode (Prescalar @ 4 GHz + 5 kHz)