ICS8430252-45 Datasheet, PDF (6/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8430252-45
FEMTOCLOCKS™CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
2V
1.65V±5%
V_CC,
V_CCA, V_{CCO_B}
LVPECL
V_EE
SCOPE
Qx
nQx
V_CC,
V_CCA, V_{CCO_A}
LVCMOS
V_EE
SCOPE
Qx
-1.3V±0.165V
3.3V CORE/3.3V LVPECL OUTPUT LOAD AC TEST CIRCUIT
-1.65V±5%
3.3V CORE/3.3V LVCMOS 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
V
CCO_LVCMOS
QA
2
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
LVCMOS OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
nQB
QB
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
LVPECL OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
20%
Clock
Outputs
80%
t_R
80%
t_F
20%
LVCMOS OUTPUT RISE/FALL TIME
Clock
20%
Outputs
80%
t_R
LVPECL OUTPUT RISE/FALL TIME
8430252CG-45
80%
t_F
V_{SW I N G}
20%
www.icst.com/products/hiperclocks.html
6
REV. B DECEMBER 9, 2005