
ICS843SDN
FEMTOCLOCKCRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
IDT / ICS 3.3V LVPECL CLOCK GENERATOR
3
ICS843SDNAG REV. A
NOVEMBER 13, 2012
Table 4. Crystal Characteristics
NOTE: It is not recommended to overdrive the crystal input with an external clock.
NOTE 1:Input frequency is limited to a range of 23.2MHz – 30MHz due to VCO range.
AC Electrical Characteristics
Table 5. AC Characteristics, VCC = 3.3V ± 5%, VEE = 0V, TA = 0°C to 70°C
NOTE 1: Please refer to Phase Noise Plot.
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
Mode of Oscillation
Fundamental
Frequency; NOTE 1
23.2
30
MHz
Equivalent Series Resistance (ESR)
40
Shunt Capacitance
7pF
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
116
150
MHz
tjit()
RMS Phase Jitter, Random;
NOTE 1
120MHz,
(Integration Range: 12kHz – 20MHz)
0.81
ps
tR / tF
Output Rise/Fall Time
20% to 80%
100
600
ps
odc
Output Duty Cycle
47
53
%