AD9577BCPZ-R7 datasheet(20/44 Pages) AD

20 / 44 page

AD9577

Data Sheet

Rev. A | Page 20 of 44

PLL2 PHASE NOISE PERFORMANCE

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10k

100k

100M

10M

FREQUENCY (Hz)

Figure 12. Phase Noise, PLL2, OUT2 LVPECL, 100 MHz, Integer-N Mode

(fXTAL = 25 MHz, Nb = 100, V2 = 5, D2 = 5)

–100

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–120

–110

10k

100k

100M

10M

FREQUENCY (Hz)

Figure 13. Phase Noise, PLL2, OUT2 LVPECL, 156.25 MHz, Integer-N Mode

(fXTAL = 25 MHz, Nb = 100, V2 = 4, D2 = 4)

–100

–160

–150

–140

–130

–120

–110

10k

100k

100M

10M

FREQUENCY (Hz)

Figure 14. Phase Noise, PLL2, OUT2 LVPECL, 155.52 MHz, Fractional-N Mode

(fXTAL = 25 MHz, Nb = 99, FRAC = 333, MOD = 625, V2 = 2, D2 = 8), Spurs

Disabled

–110

–160

–150

–140

–130

–120

10k

100k

100M

10M

FREQUENCY (Hz)

Figure 15. Phase Noise, PLL2, OUT2 LVPECL, 106.25 MHz, Integer-N Mode

(fXTAL = 25 MHz, Nb = 102, V2 = 4, D2 = 6)

–90

–100

–160

–150

–140

–130

–120

–110

10k

100k

100M

10M

FREQUENCY (Hz)

Figure 16. Phase Noise, PLL2, OUT2 LVPECL, 625 MHz, Integer-N Mode

(fXTAL = 25 MHz, Nb = 100, V2 = 2, D2 = 2)

–90

–100

–160

–150

–140

–130

–120

–110

10k

100k

100M

10M

FREQUENCY (Hz)

Figure 17. Phase Noise, PLL2, OUT2 LVPECL, 622.08 MHz, Fractional-N Mode

(fXTAL = 25 MHz, Nb = 99, FRAC = 333, MOD = 625, V2 = 2, D2 = 2), Spurs

Disabled

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