
ICS843251I-15
FEMTOCLOCKCRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
IDT / ICS 3.3V, 2.5V LVPECL CLOCK GENERATOR
6
ICS843S51BGI-15 REV. A NOVEMBER 2, 2012
Parameter Measurement Information
3.3V LVPECL Output Load AC Test Circuit
RMS Phase Jitter
Output Duty Cycle/Pulse Width/Period
2.5V LVPECL Output Load AC Test Circuit
Output Rise/Fall Time
-
SCOPE
Qx
nQx
V
EE
VCC
2V
-1.3V ± 0.165V
VCCA
2V
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
e
r
t
PW
t
PERIOD
t
PW
t
PERIOD
odc =
x 100%
nQ
Q
-
SCOPE
Qx
nQx
V
EE
VCC
2V
-0.5V ± 0.125V
VCCA
2V
20%
80%
20%
tR
t F
VSWING
nQ
Q