ICS843204I Datasheet, PDF (6/16 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

ICS843204I
FEMTOCLOCK™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
2V
2V
2V
V _{V CC, CCA_A}
V_{CCO_A,}
V_{CCO_B}
V_{CCA_B}
SCOPE
Qx
LVPECL
nQx
V_EE
-1.3V ± 0.33V
3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT
nQx
Qx
nQy
Qy
t sk(b)
Where X = A or B outputs
BANK SKEW
Phase Noise Plot
Phase Noise Mask
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
nQA0, nQA1
nQB0, nQB1
QA0, QA1 _20%
QB0, QB1
80%
t_R
RMS PHASE JITTER
OUTPUT RISE/FALL TIME
nQA0, nQA1
nQB0, nQB1
QA0, QA1
QB0, QB1
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
80%
t_F
V_{SW I N G}
20%
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
IDT^™ / ICS^™ 3.3V LVPECL FREQUENCY SYNTHESIZER
6
ICS843204AGI REV. A MARCH 18, 2009