
ICS843021AG REVISION D OCTOBER 12, 2010
3
2010 Integrated Device Technology, Inc.
ICS843021 Data Sheet
FEMTOCLOCK CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
Table 4B. LVPECL DC Characteristics, VCC = 3.3V ±10%, VEE = 0V, TA = 0°C to 70°C
NOTE 1: Outputs termination with 50
to V
CC – 2V.
Table 5. Crystal Characteristics
NOTE 1:Input frequency is limited to a range of 22.4MHz – 28MHz due to VCO range.
AC Electrical Characteristics
Table 6. AC Characteristics, VCC = 3.3V ± 10%, VEE = 0V, TA = 0°C to 70°
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
NOTE 1: Refer to Phase Noise Plot.
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
VOH
Output High Voltage; NOTE 1
VCC – 1.4
VCC – 0.9
V
VOL
Output Low Voltage; NOTE 1
VCC – 2.0
VCC – 1.7
V
VSWING
Peak-to-Peak Output Voltage Swing
0.6
1.0
V
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
Mode of Oscillation
Fundamental
Frequency; NOTE 1
14
40
MHz
Equivalent Series Resistance (ESR)
50
Shunt Capacitance
7pF
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
112
140
MHz
tjit()
RMS Phase Jitter, Random;
NOTE 1
125MHz,
Integration Range: 1.875MHz – 20MHz
0.37
0.65
ps
tR / tF
Output Rise/Fall Time
20% to 80%
250
550
ps
odc
Output Duty Cycle
49
51
%