ICS843004I-04 Datasheet, PDF (4/14 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL/LVCMOS-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843004I-04
FEMTOCLOCKS™ CRYSTAL/LVCMOS-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
TABLE 5. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
17.5
21.25
50
7
1
Units
MHz
Ω
pF
mW
TABLE 6.
AC
CHARACTERISTICS,
V
CC
=
V
CCA
=
V
CCO
= 3.3V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
f_OUT
Output Frequency
Output Divider = ÷1
560
Output Divider = ÷4
140
tsk(o) Output Skew; NOTE 1, 2, 3
155.52MHz,
Integration Range: 12kHz - 20MHz
0.94
tjit(Ø)
RMS Phase Jitter (Random);
156.25MHz,
NOTE 4
Integration Range: 1.875MHz - 20MHz
0.57
622.08MHz,
Integration Range: 12kHz - 20MHz
82
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
175
Output Divider = ÷4
48
Output Divider = ÷1
40
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V_CCO/2.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Output skew measurements taken with all outputs in the same divide configuration.
NOTE 4: Please refer to the Phase Noise Plot.
Maximum
680
170
75
675
52
60
Units
MHz
MHz
ps
ps
ps
ps
ps
%
%
843004AGI-04
www.icst.com/products/hiperclocks.html
4
REV. A FEBRUARY 15, 2006