ICS842031I-01 Datasheet, PDF (5/9 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO- HSTL CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS842031I-01
FEMTOCLOCKS™ CRYSTAL-TO- HSTL
CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
3.3V ± 5%
V_DD,
V_DDA
HSTL
GND
0V
2.5V ± 5%
SCOPE
Qx
nQx
V_DD,
V_DDA
HSTL
GND
0V
SCOPE
Qx
nQx
HSTL 3.3V OUTPUT LOAD AC TEST CIRCUIT
HSTL 2.5V OUTPUT LOAD AC TEST CIRCUIT
Phase Noise Plot
Phase Noise Mask
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
nQ
Q
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
RMS PHASE JITTER
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
Clock _20%
Outputs
80%
t_R
OUTPUT RISE/FALL TIME
842031AGI-01
80%
t_F
V_{SW I N G}
20%
www.icst.com/products/hiperclocks.html
5
REV. A JUNE 21, 2005