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| ICS844251I-15 Datasheet, PDF (4/11 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-LVDS CLOCK GENERATOR | |||
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Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844251I-15
FEMTOCLOCKS⢠CRYSTAL-TO-LVDS
CLOCK GENERATOR
TABLE 3D. LVDS DC CHARACTERISTICS, VDD = VDDA = 3.3V±5%, TA = -40°C TO 85°C
Symbol
VOD
Î VOD
VOS
Î VOS
Parameter
Differential Output Voltage
V Magnitude Change
OD
Offset Voltage
VOS Magnitude Change
Test Conditions
Minimum
TABLE 3E. LVDS DC CHARACTERISTICS, VDD = VDDA = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum
V
OD
Î VOD
VOS
Î VOS
Differential Output Voltage
VOD Magnitude Change
Offset Voltage
VOS Magnitude Change
Typical
400
TBD
1.4
TBD
Typical
400
TBD
1.15
TBD
Maximum
Units
mV
mV
V
mV
Maximum
Units
mV
mV
V
mV
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
Test Conditions
Minimum Typical Maximum
Fundamental
23.2
30
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5A. AC CHARACTERISTICS, VDD = VDDA = 3.3V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
fOUT
Output Frequency
f_SEL = 0
f_SEL = 1
tjit(Ã)
RMS Phase Jitter ( Random);
NOTE 1
125MHz @ Integration Range:
1.875MHz - 20MHz
625MHz @ Integration Range:
1.875MHz - 20MHz
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
NOTE 1: Please refer to the Phase Noise Plots following this section.
Minimum
116
580
Typical
Maximum
150
750
Units
MHz
MHz
0.46
ps
0.35
ps
300
ps
50
%
TABLE 5B. AC CHARACTERISTICS, VDD = VDDA = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
fOUT
Output Frequency
f_SEL = 0
f_SEL = 1
tjit(Ã)
RMS Phase Jitter ( Random);
NOTE 1
125MHz @ Integration Range:
1.875MHz - 20MHz
625MHz @ Integration Range:
1.875MHz - 20MHz
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
NOTE 1: Please refer to the Phase Noise Plots following this section.
Minimum
116
580
Typical
Maximum
150
750
Units
MHz
MHz
0.46
ps
0.35
ps
300
ps
50
%
844251BGI-15
www.icst.com/products/hiperclocks.html
4
REV. A NOVEMBER 23, 2005
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