
ICS843251-04
FEMTOCLOCKCRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
IDT / ICS 3.3V LVPECL CLOCK GENERATOR
6
ICS843S51AG-04 REV. A JANUARY 12, 2009
Parameter Measurement Information
3.3V LVPECL Output Load AC Test Circuit
Output Duty Cycle/Pulse Width/Period
RMS Phase Jitter
Output Rise/Fall Time
SCOPE
Qx
nQx
LVPECL
V
EE
VCC
2V
1.3V ± 0.165V
-
VCCA
2V
t
PW
t
PERIOD
t
PW
t
PERIOD
odc =
x 100%
nQ
Q
-
Phase Noise Mask
Offset Frequency
f
1
f
2
Phase Noise Plot
RMS Jitter = Area Under the Masked Phase Noise Plot
Noise
P
o
w
er
20%
80%
20%
tR
t F
VSWING
nQ
Q