AD9520-4 Analog Devices, Inc., AD9520-4 Datasheet - Page 25

• Manufacturer Part Number: AD9520-4
• Description: 12 Lvpecl/24 Cmos Output Clock Generator With Integrated 1.6 Ghz Vco
• Manufacturer: Analog Devices, Inc.

1.475 GHz; PFD = 15.36 MHz; LBW = 40 kHz; LVPECL Output = 122.88 MHz
Figure 31. Phase Noise (Absolute) Clock Generation; Internal VCO @
–100
–110
–120
–130
–140
–150
–160
–100
–110
–120
–130
–140
–150
–160
Figure 30. Additive (Residual) Phase Noise, CLK-to-CMOS @
10
1k
100
10k
1k
250 MHz, Divide-by-4
FREQUENCY (Hz)
FREQUENCY (Hz)
100k
10k
100k
1M
1M
10M
10M
100M
100M
Rev. 0 | Page 25 of 84
Figure 32. Phase Noise (Absolute) Clock Cleanup; Internal VCO @ 1.552 GHz;
@ 245.76 MHz; PFD = 15.36 MHz; LBW = 250 Hz; LVPECL Output = 245.76 MHz
Figure 33. Phase Noise (Absolute), External VCXO (Toyocom TCO-2112)
–100
–110
–120
–130
–140
–150
–160
–120
–130
–140
–150
–160
PFD = 19.44 MHz; LBW = 1.84 kHz; LVPECL Output = 155.52 MHz
–80
–90
1k
1k
INTEGRATED RMS JITTER (12kHz TO 20MHz): 442
10k
10k
100k
FREQUENCY (Hz)
100k
FREQUENCY (Hz)
1M
1M
10M
10M
AD9520-4
f
S
100M
100M