AD9557(RevA) View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
AD9557 Datasheet PDF : 92 Pages
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Data Sheet
AD9557
TYPICAL PERFORMANCE CHARACTERISTICS
fR = input reference clock frequency; fO = output clock frequency; fSYS = SYSCLK input frequency; fS = internal system clock frequency;
LF = SYSCLK PLL internal loop filter used. AVDD, AVDD3, and DVDD at nominal supply voltage; fS = 786.432 MHz, unless otherwise noted.
–60
INTEGRATED RMS JITTER (12kHz TO 20MHz): 296fs
–70
–60
INTEGRATED RMS JITTER (12kHz TO 20MHz): 285fs
–70
–80
–80
–90
–90
–100
–100
–110
–110
–120
–120
–130
–130
–140
–140
–150
–150
–160
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
–160
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 3. Absolute Phase Noise (Output Driver = HSTL),
fR = 19.44 MHz, fO = 622.08 MHz,
DPLL Loop BW = 50 Hz, fSYS = 49.152 MHz Crystal
Figure 5. Absolute Phase Noise (Output Driver = HSTL),
fR = 19.44 MHz, fO = 693.482991 MHz,
DPLL Loop BW = 50 Hz, fSYS = 49.152 MHz Crystal
–60
INTEGRATED RMS JITTER (12kHz TO 20MHz): 320fs
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 4. Absolute Phase Noise (Output Driver = HSTL),
fR = 19.44 MHz, fO = 644.53125 MHz,
DPLL Loop BW = 50 Hz, fSYS = 49.152 MHz Crystal
–70
INTEGRATED RMS JITTER (12kHz TO 20MHz): 301fs
–80
–90
–100
–110
–120
–130
–140
–150
–160
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 6. Absolute Phase Noise (Output Driver = HSTL),
fR = 19.44 MHz, fO = 174.703 MHz,
DPLL Loop BW = 1 kHz, fSYS = 49.152 MHz Crystal
Rev. A | Page 19 of 92
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