ICS843002I Datasheet, PDF (4/16 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843002I
FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V
LVPECL FREQUENCY SYNTHESIZER
TABLE
3D.
LVPECL
DC
CHARACTERISTICS,
V=
CC
V=
CCA
V
CCO
=
3.3V±10%
OR
2.5V±5%,
TA
=
-40°C
TO
85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
V_OH
Output High Voltage; NOTE 1
V_OL
Output Low Voltage; NOTE 1
V_SWING Peak-to-Peak Output Voltage Swing
NOTE 1: Outputs terminated with 50Ω to V_CCO - 2V.
V_CCO - 1.4
V_CCO - 2.0
0.6
V_CCO - 0.9
V
V_CCO - 1.7
V
1.0
V
TABLE 4. 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
23.33 26.5625 28.33
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5A.
AC
CHARACTERISTICS,
V
CC
=
V
CCA
=
V
CCO
= 3.3V±10%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
f_OUT
Output Frequency
tsk(o) Output Skew; NOTE 1, 2
F_SEL[1:0] = 00
F_SEL[1:0] = 01
F_SEL[1:0] = 10
F_SEL[1:0] =11
212.5MHz, (2.55MHz - 20MHz)
186.67
140
93.33
46.67
0.50
226.67
170
113.33
56.67
30
MHz
MHz
MHz
MHz
ps
ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
159.375MHz, (1.875MHz - 20MHz)
106.25MHz, (637kHz - 5MHz)
0.54
0.68
ps
ps
53.125MHz, (637kHz - 5MHz)
0.70
ps
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
350
F_SEL[1:0] ≠ 00
49
F_SEL[1:0] = 00
43
650
ps
51
%
57
%
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at the output differential cross points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Measured using crystal input.
843002AGI
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4
REV. A JANUARY 4, 2006