ICS8422004-01I Datasheet, PDF (7/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8422004I-01
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/1.8V OUTPUT LOAD AC TEST CIRCUIT
nQx
Qx
nQy
Qy
t sk(o)
LVHSTL 2.5V/1.8V OUTPUT LOAD AC TEST CIRCUIT
Clock
20%
Outputs
80%
t_R
80%
t_F
V_{SW I N G}
20%
OUTPUT SKEW
OUTPUT RISE/FALL TIME
Phase Noise Plot
Phase Noise Mask
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
nQ0:nQ3
Q0:Q3
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
RMS PHASE JITTER
8422004AGI-01
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
www.icst.com/products/hiperclocks.html
REV. B NOVEMBER 14, 2005
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