Analog Devices AD9912 specifications Absolute Phase Noise of Unfiltered DAC Output, fOUT = 63 MHz

AD9912

	–115			RMS JITTER (100Hz TO 20MHz):
				50MHz:	62fs
	–125			200MHz:	37fs
				400MHz: 31fs
(dBc/Hz)	–135
NOISE	–145
PHASE	–155					400MHz
	–165				200MHz
	–175				50MHz			-051
	100	1k	10k	100k	1M	10M	100M
								06763
			FREQUENCY OFFSET (Hz)

	–115
(dBc/Hz)	–125
	–135
NOISE	–145
PHASE	–155
	–165
	–175
	100

RMS JITTER (100Hz TO 100MHz): 83fs

1k	10k	100k	1M	10M	100M
	FREQUENCY OFFSET (Hz)

06763-054

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)

	–115			RMS JITTER (100Hz TO 20MHz): 69fs
	–125
(dBc/Hz)	–135
NOISE	–145
PHASE	–155
	–165
	–175							-052
	100	1k	10k	100k	1M	10M	100M
								06763
			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)

	–115			RMS JITTER (100Hz TO 40MHz): 61fs
	–125
(dBc/Hz)	–135
NOISE	–145
PHASE	–155
	–165
	–175							-053
	100	1k	10k	100k	1M	10M	100M
								06763
			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)

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			RMS JITTER (100Hz TO 100MHz): 82fs
	–125
(dBc/Hz)	–135
NOISE	–145
PHASE	–155
	–165
	–175							-055
	100	1k	10k	100k	1M	10M	100M
								06763
			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			RMS JITTER (100Hz TO 100MHz): 22fs
	–120
(dBc/Hz)	–130
NOISE	–140
PHASE	–150
	–160
	–170							-056
	100	1k	10k	100k	1M	10M	100M
								06763
			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

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