Datasheet

ADF4150 Data Sheet
Rev. A | Page 10 of 28
Figure 10. RF Output Phase Noise RF Dividers Used; Integer-N; Low Noise
Mode; VCOOUT = 1750 MHz, REF
IN
= 100 MHz, PFD = 25 MHz, Loop Filter
Bandwidth = 50 kHz
Figure 11. RF Buffer Output Fractional-N Phase Noise and Spur Performance;
Low Noise Mode; VCOOUT = 1750 MHz, REF
IN
= 100 MHz, PFD = 25 MHz,
Loop Filter Bandwidth = 15 kHz, Channel Spacing = 200 kHz; FRAC = 1,
MOD = 5; Output Divider = 1
Figure 12. RF Buffer Output Fractional-N Phase Noise and Spur Performance;
Low Noise Mode; VCOOUT = 1750 MHz, REF
IN
= 100 MHz, PFD = 25 MHz,
Loop Filter Bandwidth = 15 kHz, Channel Spacing = 200 kHz; FRAC = 1,
MOD = 5; Output Divider = 2
Figure 13. RF Buffer Output Fractional-N Phase Noise and Spur Performance;
Low Noise Mode; VCOOUT = 1750 MHz, REF
IN
= 100 MHz, PFD = 25 MHz,
Loop Filter Bandwidth = 15 kHz, Channel Spacing = 200 kHz. FRAC = 1,
MOD = 5. Output divider = 4
–180
–160
–140
–120
–100
–80
–60
1k 10k 100k 1M 10M
POWER (dBc)
FREQUENCY (Hz)
08226-038
1k
10k 100k
1M
10M
FREQUENCY (Hz)
–180
–160
–140
–120
–100
–80
–60
POWER (dBc)
08226-039
1k 10k 100k 1M 10M
FREQUENCY (Hz)
–180
–160
–140
–120
–100
–80
–60
POWER (dBc)
08226-040
1k 10k 100k 1M 10M
FREQUENCY
(Hz)
–180
–160
–140
–120
–100
–80
–60
POWER (dBc)
08226-041