Datasheet

AD9557 Data Sheet
Rev. B | Page 20 of 92
–160
–150
–140
–130
–120
–1
10
–100
–90
–80
1k100
10k
100k 1M
10M
100M
PHASE NOISE (dBc/Hz)
FREQUENCY
OFFSET (Hz)
INTEGR
ATED RMS JITTER (12kHz
TO 20MHz): 302fs
09197-007
Figure 7. Absolute Phase Noise (Output Driver = 3.3.V CMOS),
f
R
= 19.44 MHz, f
O
= 161.1328125 MHz,
DPLL Loop BW = 100 Hz, f
SYS
= 49.152 MHz Crystal
–160
–150
–140
–130
–120
–1
10
–100
–90
–80
–70
1k100
10k
100k 1M
10M
100M
PHASE NOISE (dBc/Hz)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (12kHz T
O 20MHz): 308fs
09197-008
Figure 8. Absolute Phase Noise (Output Driver = HSTL),
f
R
= 2 kHz, f
O
= 125 MHz,
DPLL Loop BW = 100 Hz, f
SYS
= 49.152 MHz Crystal
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
1k100
10k
100k 1M 10M 100M
PHASE NOISE (dBc/Hz)
FREQUENCY OFFSET (Hz)
INTEGRA
TED RMS JITTER (12kHz TO 20MHz): 343fs
09197-009
Figure 9. Absolute Phase Noise (Output Driver = HSTL),
f
R
= 25 MHz, f
O
= 1 GHz,
DPLL Loop BW = 500 Hz, f
SYS
= 49.152 MHz Crystal
–160
–150
–140
–130
–120
–
1
10
–100
–90
–80
–70
–60
1k
10
100
10k
100k 1M 10M 100M
PHASE NOISE (dBc/Hz)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (12kHz TO 20MHz): 393fs
09197-010
Figure 10. Absolute Phase Noise (Output Driver = HSTL),
f
R
= 19.44 MHz, f
O
= 644.53 MHz,
DPLL Loop BW = 0.1 Hz, f
SYS
= 19.2 MHz TCXO
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
PHASE NOISE (dBc/Hz)
FREQUENC
Y
OFFSET (Hz)
INTEGR
A
TED RMS JITTER (12kHz T
O 20MHz): 371s
1k10
100
10k
100k
1M 10M 100M
09197-0
11
Figure 11. Absolute Phase Noise (Output Driver = HSTL),
f
R
= 19.44 MHz, f
O
= 693.482991 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)
INTEGRATED RMS JITTER (12kHz
TO 20MHz): 404fs
09197-012
Figure 12. Absolute Phase Noise (Output Driver = HSTL),
f
R
= 19.44 MHz, f
O
= 312.5 MHz,
DPLL Loop BW = 0.1 Hz, f
SYS
= 19.2 MHz TCXO