AD9912BCPZ Datasheet, PDF (14/40 Pages) Analog Devices – 1 GSPS Direct Digital Synthesizer with 14-Bit DAC

AD9912
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RMS JITTER (100Hz TO 20MHz):
50MHz: 62fs
200MHz: 37fs
400MHz: 31fs
–145
–155
400MHz
–165
200MHz
–175
100
50MHz
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 21. Absolute Phase Noise of Unfiltered DAC Output,
fOUT = 50 MHz, 200 MHz, and 400 MHz, SYSCLK Driven by
a 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
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RMS JITTER (100Hz TO 20MHz): 69fs
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–135
–145
–155
–165
–175
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 22. Absolute Phase Noise of Unfiltered DAC Output, fOUT = 63 MHz,
SYSCLK Driven by a 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
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–125
RMS JITTER (100Hz TO 40MHz): 61fs
–135
–145
–155
–165
–175
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 23. Absolute Phase Noise of Unfiltered DAC Output, fOUT = 171 MHz,
SYSCLK Driven by a 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
–115
–125
RMS JITTER (100Hz TO 100MHz): 83fs
–135
–145
–155
–165
–175
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 24. Absolute Phase Noise of Unfiltered DAC Output, fOUT = 258.3 MHz,
SYSCLK Driven by a 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
–115
–125
RMS JITTER (100Hz TO 100MHz): 82fs
–135
–145
–155
–165
–175
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 25. Absolute Phase Noise of Unfiltered DAC Output, fOUT = 311.6 MHz,
SYSCLK Driven by a 1 GHz Wenzel Oscillator (SYSCLK PLL Bypassed)
–110
–120
RMS JITTER (100Hz TO 100MHz): 22fs
–130
–140
–150
–160
–170
100
1k
10k
100k
1M
10M
100M
FREQUENCY OFFSET (Hz)
Figure 26. Absolute Phase Noise of 1 GHz Reference Used for Performance
Plots; Wenzel Components Used: 100 MHz Oscillator, LNBA-13-24 Amp,
LNOM 100-5 Multiplier, LNDD 500-14 Diode Doubler
Rev. F | Page 14 of 40