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AD9858 Datasheet(PDF) 12 Page - Analog Devices

Part # AD9858
Description  1 GSPS Direct Digital Synthesizer
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9858 Datasheet(HTML) 12 Page - Analog Devices

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AD9858
Rev. A | Page 12 of 32
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10
10M
1M
100K
10K
FREQUENCY (Hz)
1K
100
Figure 15. Residual Phase Noise, 103 MHz FOUT, 1 GHz REFCLK
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10M
100M
1M
100K
10K
1K
100
FREQUENCY (Hz)
Figure 16. Fractional Divider Loop Residual Phase Noise,
FIN = 115 MHz, FOUT = 1550 MHz, Loop BW = 50 kHz
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CENTER 1.55GHz
150kHz/
SPAN 1.55MHz
1kHz
1kHz
3.8s
RF ATT
UNIT
10dB
dBm
A
1AP
REF LVL
0dBm
RBW
VBW
SWT
DELTA 1 [T1]
0.0dB
0.00000000Hz
1
Figure 17. Fractional Divider Loop SFDR, FIN = 96.9 MHz,
FOUT = 1550 MHz, BW = 1.5 MHz
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–100
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10
10M
1M
100K
10K
1K
100
FREQUENCY (Hz)
Figure 18. Residual Phase Noise, 403 MHz FOUT, 1 GHz REFCLK
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0
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–100
–110
–120
–130
–140
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–160
10
10M
100M
1M
100K
10K
1K
100
FREQUENCY (Hz)
Figure 19. Translation Loop Residual Phase Noise
FLO = 1500 MHz, FOUT = 1550 MHz, Loop BW = 50 kHz
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0
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–50
–60
–70
–80
–90
–100
CENTER 1.55GHz
150kHz/
SPAN 1.5MHz
2kHz
2kHz
940s
RF ATT
UNIT
10dB
dBm
A
1AP
REF LVL
0dBm
RBW
VBW
SWT
DELTA 1 [T1]
–56.76dB
423.84769539kHz
1
1
Figure 20. Fractional Divider Loop SFDR, FIN = 97.3 MHz,
FOUT = 1550 MHz, BW = 1.5 MHz



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