ICS8422002I Datasheet, PDF (7/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8422002I
FEMTOCLOCKS™ CRYSTAL-TO-
LVHSTL FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
3.3V ± 5%
1.8V ± 0.2V
V_DD,
V_DDA, V_DDO
LVHSTL
GND
0V
2.5V ± 5%
1.8V ± 0.2V
SCOPE
Qx
nQx
V_DD,
V_DDA, V_DDO
LVHSTL
GND
0V
SCOPE
Qx
nQx
LVHSTL 3.3V CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT LVHSTL 2.5V CORE/ 1.8V OUTPUT LOAD AC TEST CIRCUIT
nQx
Qx
nQy
Qy
t sk(o)
OUTPUT SKEW
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, nQ1
Q0, Q1
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
OUTPUT RISE/FALL TIME
8422002AGI
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
www.icst.com/products/hiperclocks.html
REV. B NOVEMBER 14, 2005
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