ICS843081I-01 Datasheet, PDF (4/15 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK MULTIPLIER

Integrated
Circuit
Systems, Inc.
ICS843081I-01
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V, 2.5V LVPECL CLOCK MULTIPLIER
TABLE 3D. LVPECL DC CHARACTERISTICS, V_CC = V_CCA = 3.3V ± 5% OR 2.5V ± 5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
V_OH
Output High Voltage; NOTE 1
V_OL
Output Low Voltage; NOTE 1
V_SWING Peak-to-Peak Output Voltage Swing
NOTE 1: Outputs terminated with 50Ω to V_CC - 2V.
V_CC - 1.4
V_CC - 2.0
0.6
Maximum
V_CC - 0.9
V_CC - 1.7
1.0
Units
V
V
V
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
Test Conditions
Minimum Typical Maximum
Fundamental
19.6
28
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5A. AC CHARACTERISTICS, V_CC = V_CCA = 3.3V ± 5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
tjit(Ø)
t_R / t_F
odc
Output Frequency
RMS Phase Jitter (Random);
NOTE 1
Output Rise/Fall Time
Output Duty Cycle
625MHz @ Integration Range:
1.875MHz - 20MHz
20% to 80%
XTAL = 25MHz
NOTE 1: Please refer to the Phase Noise Plot following this section.
Minimum Typical Maximum Units
490
700
MHz
0.32
ps
125
600
ps
45
55
%
TABLE 5B. AC CHARACTERISTICS, V_CC = V_CCA = 2.5V ± 5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
tjit(Ø)
t_R / t_F
odc
Output Frequency
RMS Phase Jitter (Random);
NOTE 1
Output Rise/Fall Time
Output Duty Cycle
625MHz @ Integration Range:
1.875MHz - 20MHz
20% to 80%
XTAL = 25MHz
NOTE 1: Please refer to the Phase Noise Plot following this section.
Minimum Typical Maximum Units
490
700
MHz
0.39
ps
125
650
ps
45
55
%
843081AGI-01
www.icst.com/products/hiperclocks.html
4
REV. B JANUARY 23, 2006