Datasheet

AD9558 Data Sheet
Rev. B | Page 22 of 104
–160
–150
–140
–130
–120
–1
10
–100
–90
–80
–70
1k
10
100
10k
100k 1M
10M
100M
PHASE NOISE (dBc/Hz)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (12kHz T
O 20MHz): 391fs
09758-013
Figure 13. Absolute Phase Noise (Output Driver = 3.3 V CMOS),
f
R
= 19.44 MHz, f
OUT
=161.1328125 MHz,
DPLL Loop BW = 0.1 Hz, f
SYS
= 19.2 MHz TCXO
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
1k10 100
10k
100k
1M
10M
100M
PHASE NOISE (dBc/Hz)
FREQUENCY OFFSET (Hz)
INTEGRA
TED RMS JITTER (12kHz TO 20MHz): 395fs
09758-014
Figure 14. Absolute Phase Noise (Output Driver = 1.8 V CMOS),
f
R
= 2 kHz, f
OUT
= 70.656 MHz,
DPLL Loop BW = 0.1 Hz, f
SYS
= 19.2 MHz TCXO
1k10 100
10k
100k 1M
10M
100M
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
PHASE NOISE (dBc/Hz)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (12kHz TO 20MHz): 388fs
09758-016
Figure 15. Absolute Phase Noise (Output Driver = HSTL),
f
R
= 19.44 MHz, f
OUT
= 644.53 MHz, f
SYS
= 19.2 MHz TCXO
Holdover Mode
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
DIFFERENTIAL PEAK-
T
O-PEAK AMPLITUDE (V)
0
100 200 300
400
500 600 700
800
900
1000
1100
1200
1300
FREQUENCY
(MHz)
09758-
1
16
Figure 16. Amplitude vs. Toggle Rate,
HSTL Mode (LVPECL-Compatible Mode)
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
100
200
300
400
500
600
700
800
DIFFERENTIAL PEAK-TO-PEAK AMPLITUDE (V)
FREQUENC
Y
(MHz)
LV
DS
B
OOS
T M
O
DE
LV
DS D
EFAU
LT
09758-117
Figure 17. Amplitude vs. Toggle Rate, LVDS
1.0
1.5
2.0
2.5
3.0
3.5
0
50
100
150
200
250 300
PEAK-TO-PEAK
AMPLITUDE (V)
FREQUENCY (MHz)
3.3V
CMOS
1.8V CMOS
09758-
1
18
Figure 18. Amplitude vs. Toggle Rate with 10 pF Load,
3.3 V (Strong Mode) and 1.8 V CMOS