ICS843021I-01 Datasheet, PDF (6/15 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR

ICS843021I-01
FEMTOCLOCKS™CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
Parameter Measurement Information
2V
2V
V_CC
SCOPE
Qx
LVPECL
nQx
V_EE
-1.3V ± 0.165V
3.3V LVPECL Output Load AC Test Circuit
V_CC
SCOPE
Qx
LVPECL
nQx
V_EE
--0.5V ± 0.125V
2.5V LVPECL Output Load AC Test Circuit
Phase Noise Plot
Phase Noise Mask
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
RMS Phase Jitter
Clock
20%
Outputs
80%
t_R
Output Rise/Fall Time
80%
t_F
V_{SW I N G}
20%
nQ
Q
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
Output Duty Cycle/Pulse Width/Period
IDT™ / ICS™ 3.3V , 2.5V LVPECL CLOCK GENERATOR
6
ICS843021AGI-01 REV. A DECEMBER 3, 2007