ICS843002 Datasheet, PDF (7/16 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843002
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
2V
V_CC,
V_CCA, V_CCO
LVPECL
V_EE
-1.3V ± 0.33V
nQx
SCOPE
Qx
Qx
nQy
nQx
Qy
t sk(o)
3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT
Phase Noise Plot
OUTPUT SKEW
Phase Noise Mask
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
Clock
20%
Outputs
80%
t_R
RMS PHASE JITTER
OUTPUT RISE/FALL TIME
nQ0, nQ1
Q0, Q1
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
843002AG
www.icst.com/products/hiperclocks.html
7
REV. B MAY 6, 2005