ICS845252I Datasheet, PDF (9/17 Pages) Integrated Device Technology – FemtoClock™ Crystal-to-CML Clock Generator

ICS845252I Data Sheet
Parameter Measurement Information
FEMTOCLOCK™ CRYSTAL-TO-CML CLOCK GENERATOR
0V
Power
Supply
-3.3V ± 5%
VDD
GND
SCOPE
Qx
CML Driver
0V
Power
Supply
-2.5V ± 5%
VDD
GND
SCOPE
Qx
CML Driver
3.3V CML Output Load AC Test Circuit
Phase Noise Plot
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under Offset Frequency Markers
RMS Phase Jitter
2.5V CML Output Load AC Test Circuit
nQx
Qx
nQy
Qy
t sk(o)
Output Skew
nQ0, nQ1
20%
Q0, Q1
80%
t_R
Output Rise/Fall Time
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 Duty Cycle/Pulse Width/Period
ICS845252AKI REVISION A SEPTEMBER 30, 2009
9
©2009 Integrated Device Technology, Inc.