HMC704LP4E Datasheet, PDF (6/44 Pages) Hittite Microwave Corporation – 8 GHz fractionaL-N PLL

v04.0215
HMC704LP4E
8 GHZ FRACTIONAL-N PLL
Figure 11. Floor FOM vs.
CP Voltage, Hikcp+CP Current = 6mA
-224
-226
-228
-230
-232
-234
0
1
2
3
4
5
CP VOLTAGE (V)
Figure 13. Spur Performance vs.
Frequency Offset^[1]
-50
-55
-60
-65
-70
-75
-80
-85
-90
1
10
100
1000
FREQUENCY OFFSET (kHz)
Figure 12. Floor FOM vs. CP Current
-200
-205
-210
-215
-220
-225
-230
0
0.5
1
1.5
2
2.5
3
CP CURRENT (mA)
Figure 14. Spur Performance vs.
Frequency Offset ^[2]
-55
-60
-65
-70
-75
-80
-85
-90
1
10
100
1000
FREQUENCY OFFSET (KHz)
Figure 15. Worst Case
Integer Boundary Spur Near 8 GHz
-50
Mode B
HiK Mode B
-55
-60
-65
Mode A
-70
-75
8450
8550
Mode A
Mode B
HiK Mode A
HiK Mode B
HiK Mode A
8650
8750
FREQUENCY (MHz)
8850
8950
Figure 16. Worst Case
Integer Boundary Spur Near 4 GHz
-50
Mode B
-55
HiK Mode B
-60
-65
-70
Mode A
-75
HiK Mode A
-80
-85
4150
4200
4250
Mode A
Mode B
HiK Mode A
HiK Mode B
4300 4350 4400
4450
4500
4550
4600
FREQUENCY (MHz)
[1] CP Current = 2.5 mA, Loop Filter = 20 kHz, Phase Margin = 78°
[2] Hi K, CP Current = 6 mA, Loop Filter BW = 45 kHz, Phase Margin = 78°
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