ADF4150(Rev0) Ver la hoja de datos (PDF) - Analog Devices

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ADF4150
(Rev.:Rev0)

Fractional-N/Integer-N PLL Synthesizer

Analog Devices 

ADF4150

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Figure 10. RF Output Phase Noise RF Dividers Used; Integer-N; Low Noise

Mode; VCOOUT = 1750 MHz, REFIN = 100 MHz, PFD = 25 MHz, Loop Filter

Bandwidth = 50 kHz

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FREQUENCY (Hz)

Figure 11. RF Buffer Output Fractional-N Phase Noise and Spur Performance;

Low Noise Mode; VCOOUT = 1750 MHz, REFIN = 100 MHz, PFD = 25 MHz,

Loop Filter Bandwidth = 15 kHz, Channel Spacing = 200 kHz; FRAC = 1,

MOD = 5; Output Divider = 1

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1k

10k

100k

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FREQUENCY (Hz)

Figure 12. RF Buffer Output Fractional-N Phase Noise and Spur Performance;

Low Noise Mode; VCOOUT = 1750 MHz, REFIN = 100 MHz, PFD = 25 MHz,

Loop Filter Bandwidth = 15 kHz, Channel Spacing = 200 kHz; FRAC = 1,

MOD = 5; Output Divider = 2

–60

–80

–100

–120

–140

–160

–180

1k

10k

100k

1M

10M

FREQUENCY (Hz)

Figure 13. RF Buffer Output Fractional-N Phase Noise and Spur Performance;

Low Noise Mode; VCOOUT = 1750 MHz, REFIN = 100 MHz, PFD = 25 MHz,

Loop Filter Bandwidth = 15 kHz, Channel Spacing = 200 kHz. FRAC = 1,

MOD = 5. Output divider = 4

Rev. 0 | Page 10 of 28

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