
ICS844251-14
FEMTOCLOCK CRYSTAL-TO-LVDS CLOCK GENERATOR
IDT / ICS LVDS CLOCK GENERATOR
7
ICS844251BG-14 REV. A NOVEMBER 19, 2012
Parameter Measurement Information
3.3V LVDS Output Load AC Test Circuit
Output Rise/Fall Time
RMS Phase Jitter
2.5V LVDS Output Load AC Test Circuit
Output Duty Cycle/Pulse Width/Period
OFFSET VOLTAGE SETUP
SCOPE
Qx
nQx
3.3V±5%
POWER SUPPLY
+–
Float GND
VDD
VDDA
20%
80%
20%
tR
t F
VOD
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
e
r
SCOPE
Qx
nQx
2.5V±5%
POWER SUPPLY
+–
Float GND
VDD
VDDA
nQ
Q
t
PW
t
PERIOD
t
PW
t
PERIOD
odc =
x 100%
out
LVDS
DC Input
VOS/Δ VOS
V
DD