ADCLK944
Rev. 0 | Page 7 of 12
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 3.3 V, V
EE
= 0.0 V, V
ICM
= V
REF
, T
A
= 25°C, clock outputs terminated at 50 Ω to V
CC
− 2 V, unless otherwise noted.
08770-003
CH1 300mV M 1.25ns 20.0GS/s
A CH1 36.0mV
IT 25.0ps/pt
1
Figure 3. LVPECL Differential Output Waveform at 200 MHz
0.4
0.2
0.6
0.8
1.0
1.2
1.4
1.6
DIFFERENTIAL OUTPUT VOLTAGE SWING (V)
0
0 1000 2000 3000 4000 5000 6000 7000 8000
FREQUENCY (MHz)
08770-004
3.3V
2.5V
Figure 4. Differential Output Voltage Swing vs. Frequency
80
85
90
95
100
105
110
PROPAGATION DELAY (ps)
115
0.1 0.3 0.5 0.7 0.9 1.1
DIFFERENTIAL INPUT VOLTAGE SWING (V)
08770-005
DELAY 3.3V
DELAY 2.5V
Figure 5. Propagation Delay vs. Differential Input Voltage Swing
08770-006
CH1 300mV M 250ps 20.0GS/s
A CH1 36.0mV
IT 5.0ps/pt
1
Figure 6. LVPECL Differential Output Waveform at 1000 MHz
1.55
1.50
1.45
1.40
1.35
1.30
2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8
DIFFERENTIAL OUTPUT VOLTAGE SWING (V)
POWER SUPPLY VOLTAGE (V)
+25°C
+85°C
–40°C
08770-009
Figure 7. Differential Output Voltage Swing vs. Power Supply Voltage
and Temperature, V
ID
= 1.6 V p-p
140
3.3V
2.5V
130
120
110
100
90
80
1.0 1.5 2.0 2.5 3.0 3.5
PROPAGATION DELAY (ps)
0-008
DC COMMON-MODE VOLTAGE (V
ICM
– V
EE
)
0877
Figure 8. Propagation Delay vs. DC Common-Mode Voltage
