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AD9557 Datasheet, PDF (9/92 Pages) Analog Devices – Dual Input Multiservice
Data Sheet
DISTRIBUTION CLOCK OUTPUTS
Table 10.
Parameter
Min
Typ
HSTL MODE
Output Frequency
0.36
Rise/Fall Time (20% to 80%)1
140
Duty Cycle
Up to fOUT = 700 MHz
45
48
Up to fOUT = 750 MHz
42
48
Up to fOUT = 1250 MHz
43
Differential Output Voltage Swing 700
950
Common-Mode Output Voltage
700
870
LVDS MODE
Output Frequency
0.36
Rise/Fall Time (20% to 80%)1
185
Duty Cycle
Up to fOUT = 750 MHz
44
48
Up to fOUT = 800 MHz
43
47
Up to fOUT = 1250 MHz
43
Differential Output Voltage Swing
Balanced, VOD
247
Unbalanced, ΔVOD
Offset Voltage
Common Mode, VOS
Common-Mode Difference, ΔVOS
Short-Circuit Output Current
CMOS MODE
Output Frequency
1.8 V Supply
3.3 V Supply (OUT0)
Strong Drive Strength Setting
Weak Drive Strength Setting
Rise/Fall Time(20% to 80%)1
1.8 V Supply
3.3 V Supply
Strong Drive Strength Setting
Weak Drive Strength Setting
Duty Cycle
1.8 V Mode
3.3 V Strong Mode
3.3 V Weak Mode
Output Voltage High (VOH)
AVDD3 = 3.3 V, IOH = 10 mA
AVDD3 = 3.3 V, IOH = 1 mA
AVDD3 = 1.8 V, IOH = 1 mA
Output Voltage Low (VOL)
AVDD3 = 3.3 V, IOL = 10 mA
AVDD3 = 3.3 V, IOL = 1 mA
AVDD3 = 1.8 V, IOL = 1 mA
1.125
1.26
13
0.36
0.36
0.36
1.5
0.4
8
50
47
51
AVDD3 − 0.3
AVDD3 − 0.1
AVDD − 0.2
Max
1250
250
52
53
1200
960
1250
280
53
53
454
50
1.375
50
24
150
250
25
3
0.6
0.3
0.1
0.1
AD9557
Unit Test Conditions/Comments
MHz
ps 100 Ω termination across output pins
%
%
%
mV Magnitude of voltage across pins; output driver static
mV Output driver static
MHz
ps 100 Ω termination across the output pair
%
%
%
mV Voltage swing between output pins; output driver
static
mV Absolute difference between voltage swing of
normal pin and inverted pin; output driver static
V
Output driver static
mV Voltage difference between pins; output driver static
mA Output driver static
MHz 10 pF load
MHz 10 pF load
MHz 10 pF load
ns 10 pF load
ns 10 pF load
ns 10 pF load
% 10 pF load
% 10 pF load
% 10 pF load
Output driver static; strong drive strength
V
V
V
Output driver static; strong drive strength
V
V
V
Rev. A | Page 9 of 92