ICS843021I-01 Datasheet, PDF (4/14 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
PRELIMINARY
ICS843021I-01
FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V
125MHZ LVPECL CLOCK GENERATOR
Test Conditions
Minimum Typical Maximum
Fundamental
25
50
7
Units
MHz
Ω
pF
TABLE 5A. AC CHARACTERISTICS, V_CC = 3.3V±5%, TA= -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
tjit(Ø)
Output Frequency
RMS Phase Jitter (Random);
NOTE 1
Intergration Range:
1.875MHz - 20MHz
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
NOTE 1: Please refer to the Phase Noise Plot following this section.
TABLE 5B. AC CHARACTERISTICS, V_CC = 2.5V±5%, TA= -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
tjit(Ø)
Output Frequency
RMS Phase Jitter (Random);
NOTE 1
Intergration Range:
1.875MHz - 20MHz
t /t
RF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
NOTE 1: Please refer to the Phase Noise Plot following this section.
Minimum Typical Maximum Units
125
MHz
0.41
ps
400
ps
50
%
Minimum Typical Maximum Units
125
MHz
0.42
ps
400
ps
50
%
843021AGI-01
www.icst.com/products/hiperclocks.html
4
REV. A NOVEMBER 30, 2004