ICS843020-01 Datasheet, PDF (10/20 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM 680MHZ, CRYSTAL-TO- 3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843020-01
FEMTOCLOCKS™ 680MHZ, CRYSTAL-TO-
3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
2V
V_CC,
V_CCA,
V_CCO
LVPECL
V_EE
-1.3V ± 0.165V
SCOPE
Qx
nQx
nFOUTx
FOUTx
nFOUTy
FOUTy
t sk(o)
3.3V OUTPUT LOAD AC TEST CIRCUIT
OUTPUT SKEW
Phase Noise Plot
Phase Noise Mask
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
nFOUTx
FOUTx
Pulse Width
t
PERIOD
odc = ^{t PW}
t _PERIOD
PHASE JITTER
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
Clock _20%
Outputs
80%
t_R
80%
t_F
V_{SW I N G}
20%
OUTPUT RISE/FALL TIME
843020AY-01
www.icst.com/products/hiperclocks.html
10
REV. B APRIL 14, 2005