Analog Devices AD9912 Manual page 11

10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
19.85 19.95 20.05
FREQUENCY (MHz)
Figure 9. Narrow-Band SFDR at 20.1 MHz,
SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
10
0
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–40
–50
–60
–70
–80
–90
–100
–110
200.85 200.95 201.05
FREQUENCY (MHz)
Figure 10. Narrow-Band SFDR at 201.1 MHz,
SYSCLK = 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
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398.45 398.55 398.65
FREQUENCY (MHz)
Figure 11. Narrow-Band SFDR at 398.7 MHz,
SYSCLK = 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
CARRIER: 20.1MHz
SFDR: –95dBc
FREQ. SPAN: 500kHz
RESOLUTION BW: 300Hz
VIDEO BW: 1kHz
20.15 20.25 20.35
CARRIER: 201.1MHz
SFDR: –91dBc
FREQ. SPAN: 500kHz
RESOLUTION BW: 300Hz
VIDEO BW: 1kHz
201.15 201.25 201.35
398.7MHz
CARRIER:
SFDR: –86dBc
FREQ. SPAN: 500kHz
RESOLUTION BW: 300Hz
VIDEO BW: 1kHz
398.75 398.85 398.95
Rev. D | Page 11 of 40
–80
–90
–100
–110
–120
–130
–140
–150
–160
100 1k 10k
FREQUENCY OFFSET (Hz)
Figure 12. Absolute Phase Noise Using HSTL Driver,
SYSCLK = 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
–80
–90
–100
–110
–120
–130
–140
–150
–160
10 100 1k 10k
FREQUENCY OFFSET (Hz)
Figure 13. Absolute Phase Noise Using HSTL Driver,
SYSCLK = 1 GHz (SYSCLK PLL Driven by Rohde & Schwarz SMA100 Signal
Generator at 83.33 MHz )
–80
–90
–100
–110
–120
–130
–140
–150
–160
10 100 1k 10k
FREQUENCY OFFSET (Hz)
Figure 14. Absolute Phase Noise Using HSTL Driver,
SYSCLK = 1 GHz (SYSCLK PLL Driven by Rohde & Schwarz SMA100 Signal
Generator at 25 MHz )
AD9912
RMS JITTER (100Hz TO 40MHz):
99MHz: 413fs
399MHz: 222fs
399MHz
99MHz
100k 1M 10M 100M
RMS JITTER (12kHz TO 20MHz):
99MHz: 0.98ps
399MHz: 0.99ps
399MHz
99MHz
100k 1M 10M 100M
RMS JITTER (12kHz TO 20MHz):
99MHz: 1.41ps
399MHz: 1.46ps
399MHz
99MHz
100k 1M 10M 100M