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AD9547/PCBZ 数据表(PDF) 19 Page - Analog Devices

部件名 AD9547/PCBZ
功能描述  Dual/Quad Input Network Clock Generator/Synchronizer
PDF  104 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9547/PCBZ 数据表(HTML) 19 Page - Analog Devices

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AD9547
Rev. 0 | Page 19 of 104
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 361fs (–69.0dBc)
20kHz TO 80MHz: 441fs (–67.3dBc) (EXTRAPOLATED)
Figure 7. Additive Phase Noise (Output Driver = LVPECL),
fREF = 19.44 MHz, fO = 155.52 MHz,
LBW = 1 kHz, fSYSCLK = 50 MHz, PLL On
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
12kHz TO 20MHz: 245fs (–65.0dBc)
20kHz TO 80MHz: 300fs (–64.3dBc)
Figure 8. Additive Phase Noise (Output Driver = LVPECL),
fREF = 19.44 MHz, fO = 155.52 MHz,
LBW = 1 kHz, fSYSCLK = 50 MHz (Crystal), PLL On with
2× Frequency Multiplier, ICP = 375 μA, LF = External (350 kHz)
ROHDE & SCHWARZ
SMA100 (1GHz)
ROHDE & SCHWARZ
SMA100 (50MHz)
20MHz OCXO
–170
–160
–150
–140
–130
–120
–110
–100
–90
100
1k
10k
100k
1M
10M
FREQUENCY OFFSET (Hz)
Figure 9. Phase Noise of SYSCLK Input Sources
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
ROHDE & SCHWARZ
SMA100 (1GHz)
ROHDE & SCHWARZ
SMA100 (50MHz)
50MHz CRYSTAL
Figure 10. Additive Phase Noise Comparison of SYSCLK Input Options
(Output Driver = LVPECL),
fREF = 19.44 MHz, fO = 311.04 MHz, LBW = 1 kHz
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 336fs (–69.7dBc)
20kHz TO 80MHz: 425fs (–67.6dBc)
Figure 11. Additive Phase Noise (Output Driver = LVPECL),
fREF = 8 kHz, fO = 155.52 MHz,
LBW = 100 Hz, fSYSCLK = 50 MHz (Crystal), PLL On
–70
–60
–50
–40
–30
–20
–10
0
10
10
100
1k
10k
100k
FREQUENCY OFFSET (Hz)
CLOSED-LOOP PEAKING: 0.04dB
Figure 12. Jitter Transfer Bandwidth, Output Driver = LVPECL,
fREF = 19.44 MHz, fO = 155.52 MHz,
LBW = 100 Hz (Phase Margin = 88°), fSYSCLK = 1 GHz, PLL Off



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