ICS844004-104 Datasheet, PDF (7/16 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

ICS844004-104
FEMTOCLOCK™CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
Parameter Measurement Information
3.3V±5%
POWER SUPPLY
+ Float GND –
V_DD,
V_DDO
V_DDA
LVDS
SCOPE
Qx
nQx
2.5V±5%
POWER SUPPLY
+ Float GND –
V_DD,
V_DDO
V_DDA
LVDS
SCOPE
Qx
nQx
3.3V LVDS Output Load AC Test Circuit
nQx
Qx
nQy
Qy
t sk(o)
Output Skew
2.5V LVDS 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
nQ[0:3]
QA[0:3} ^20%
80%
t_R
Output Rise/Fall Time
80%
t_F
V_OD
20%
V_OS
GND
nQ[0:3]
QA[0:3}
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
Output Duty Cycle/Pulse Width/Period
IDT™ / ICS™ LVDS FREQUENCY SYNTHESIZER
7
ICS844004AK-104 REV. A SEPTEMBER 15, 2008