Analog Devices AD9912 specifications Cmos Output Driver Waveform @ 3.3

AD9912

	650
	600
(mV)
AMPLITUDE	550
	500
	450 0

NOM SKEW 25°C, 1.8V SUPPLY

WORST CASE (SLOW SKEW 90°C, 1.7V SUPPLY)

200	400	600
	FREQUENCY (MHz)

800

06763-021

	0.6
	0.4
(V)	0.2
AMPLITUDE	0
				FREQUENCY = 600MHz
	–0.2			tRISE (20%→80%) = 104ps
				tFALL (80%→20%) = 107ps
				V p-p = 1.17V DIFF.
	–0.4			DUTY CYCLE = 50%
	–0.6						-024
	0	0.5	1.0	1.5	2.0	2.5
							06763
			TIME (ns)

Figure 27. HSTL Output Driver Single-Ended Peak-to-Peak Amplitude vs.	Figure 30. Typical HSTL Output Waveform, Nominal Conditions,
Toggle Rate (100 Ω Across Differential Pair)	DC-Coupled, Differential Probe Across 100 Ω load

AMPLITUDE (V)

2.5

2.0

1.5

1.0

0.5NOM SKEW 25°C, 1.8V SUPPLY (20pF) WORST CASE (SLOW SKEW 90°C, 1.7V SUPPLY (20pF))

0 0
	10	20	30
		FREQUENCY (MHz)

40

		1.8
		1.6
		1.4
		1.2
	(V)	1.0
	AMPLITUDE
		0.8
		0.6			FREQUENCY = 20MHz
		0.4			tRISE (20%→80%) = 5.5ns
					tFALL (80%→20%) = 5.9ns
		0.2			V p-p = 1.8V
					DUTY CYCLE = 53%
		0
06763-022		–0.2	20	40	60	80	100	06763-025
		0
					TIME (ns)

Figure 28. CMOS Output Driver Peak-to-Peak Amplitude vs. Toggle Rate	Figure 31. Typical CMOS Output Driver Waveform (@ 1.8 V),
(AVDD3 = 1.8 V) with 20 pF Load	Nominal Conditions, Estimated Capacitance = 5 pF

AMPLITUDE (V)

3.5

3.0

2.5

2.0

1.5

NOM SKEW 25°C, 1.8V SUPPLY (20pF)

1.0WORST CASE (SLOW SKEW 90°C, 3.0V SUPPLY (20pF))

0.5

0

0	50	100
	FREQUENCY (MHz)

150

	3.3
	2.8
(V)	2.3
				tRISE (20%→80%) = 2.25ns
AMPLITUDE	1.3
	1.8
				FREQUENCY = 40MHz
	0.8			tFALL (80%→20%) = 2.6ns
				V p-p = 3.3V
				DUTY CYCLE = 52%
	0.3
06763-023	–0.2 0	10	20	30	40	50	06763-026
				TIME (ns)

Figure 29. CMOS Output Driver Peak-to-Peak Amplitude vs. Toggle Rate	Figure 32. CMOS Output Driver Waveform (@ 3.3 V),
(AVDD3 = 3.3 V) with 20 pF Load	Nominal Conditions, Estimated Capacitance = 5 pF

Rev. D Page 14 of 40