ICS843246I Datasheet, PDF (7/17 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

ICS843246I
FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER
PARAMETER MEASUREMENT INFORMATION
2V
2V
V_CC,
VCCO
VCCA
LVPECL
V_EE
-1.3V ± 0.165V
SCOPE
Qx
nQx
3.3V OUTPUT LOAD AC TEST CIRCUIT
nQx
Qx
nQy
Qy
t sk(o)
OUTPUT SKEW
2.8V±0.04V
2V
2.8V±0.04V
VCC
VCCO
VCCA
LVPECL
V_EE
-0.5V ± 0.125V
SCOPE
Qx
nQx
3.3V/2.5V 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
80%
t_F
V_{SW I N G}
20%
nQ0:nQ5
Q0:Q5
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
OUTPUT RISE/FALL TIME
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
IDT^™ / ICS^™ 3.3V LVPECL FREQUENCY SYNTHESIZER
7
ICS843246BGI REV. A AUGUST 2, 2007