ADF4151 datasheet(10/28 Pages) AD

10 / 28 page

ADF4151

Data Sheet

Rev. B | Page 10 of 28

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10k

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10M

FREQUENCY OFFSET (Hz)

Figure 8. Integer-N Phase Noise and Spur Performance;

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

PFD = 25 MHz, Loop Filter Bandwidth = 50 kHz

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10k

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10M

FREQUENCY OFFSET (Hz)

Figure 9. Fractional-N Phase Noise and Spur Performance; Low Noise Mode;

VCOOUT = 1755.2 MHz, REFIN = 100 MHz, PFD = 25 MHz, Loop Filter

Bandwidth = 50 kHz, Channel Spacing = 200 kHz, FRAC = 26, MOD = 125

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–80

–100

–120

–140

–160

–180

10k

100k

10M

FREQUENCY OFFSET (Hz)

Figure 10. Fractional-N Phase Noise and Spur Performance; Low Spur Mode;

VCOOUT = 1755.2 MHz, REFIN = 100 MHz, PFD = 25 MHz, Loop Filter

Bandwidth = 50 kHz, Channel Spacing = 200 kHz, FRAC = 26, MOD = 125

–60

–80

–100

–120

–140

–160

–180

10k

100k

10M

FREQUENCY OFFSET (Hz)

Figure 11. Integer-N Phase Noise and Spur Performance;

Low Noise Mode; VCOOUT = 900 MHz, REFIN = 100 MHz,

PFD = 25 MHz, Loop Filter Bandwidth = 20 kHz

–60

–80

–100

–120

–140

–160

–180

10k

100k

10M

FREQUENCY OFFSET (Hz)

Figure 12. Fractional-N Phase Noise and Spur Performance; Low Noise Mode;

VCOOUT = 905.2 MHz, REFIN = 100 MHz, PFD = 25 MHz, Loop Filter

Bandwidth= 20 kHz, Channel Spacing = 200 kHz, FRAC = 26, MOD = 125

–60

–80

–100

–120

–140

–160

–180

10k

100k

10M

FREQUENCY OFFSET (Hz)

Figure 13. Fractional-N Phase Noise and Spur Performance; Low Spur Mode;

VCOOUT = 905.2 MHz, REFIN = 100 MHz, PFD = 25 MHz, Loop Filter Bandwidth

= 20 kHz, Channel Spacing = 200 kHz, FRAC = 26, MOD = 125

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