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HMC704LP4E Datasheet, PDF (7/44 Pages) Hittite Microwave Corporation – 8 GHz fractionaL-N PLL
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v04.0215
HMC704LP4E
8 GHZ FRACTIONAL-N PLL
Figure 17. Integer Boundary Spur vs.
CP Offset [3]
-25
Mode A
-30
Mode B
HIK Mode A
HiK Mode B
-35
Recommended
-40
Operating Region
-45
-50
HiK Mode B
-55
Mode B
-60
Mode A
-65
-600
-400
HiK Mode A
-200
0
200
400
600
OFFSET CURRENT (uA)
Figure 18. Modelled vs.
Measured Phase Noise [4]
-80
-100
-120
-140
-160
HiK Int
Predicted HiK Int
-180
100
1000
104
105
106
107
108
OFFSET (Hz)
5-7
Figure 19. Modelled vs. Measured
Phase Noise, Fractional Mode [3]
-80
-100
-120
-140
-160
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A
HAcikt
IMnot de
A
-180
100
1000
104
105
106
107
108
OFFSET (Hz)
Figure 20. Floor FOM Near 8 GHz vs.
RF Power and Mode
-227
-228
-229
-230
-231
-232
-233
HiK int
HiK Mode A
HiK Mode B
-234
-24 -21 -18 -15 -12 -9
-6
-3
0
3
RF POWER (dBm)
Figure 21. Flicker FOM Near 8 GHz vs.
RF Power and Mode
-266
-266.5
-267
-267.5
HiK int
HiK Mode A
HiK Mode B
-268
-24 -21 -18 -15 -12 -9
-6
-3
0
3
RF POWER (dBm)
Figure 22. Integer Boundary Spurious at
8 GHz + 10 kHz vs. RF Power [3]
-50
-55
5KHz
10KHz
-60
-65
-70
-75
-15
-12
-9
-6
-3
0
3
RF POWER (dBm)
[3] VCO Near 8.6 GHz, Prescalar = VCO/2
[4] Active Fractional A Mode (Prescalar @ 4 GHz + 5 kHz)
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