ICS843204I Datasheet, PDF (4/12 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843204I
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
TABLE 3C. LVPECL DC CHARACTERISTICS, V_CC = V_CCA = V_{CCO_A} = V_{CCO_B} = 3.3V±10%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
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
Maximum
V_CCO - 0.9
V_CCO - 1.7
1.0
Units
V
V
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
19.44
25
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5.
AC
CHARACTERISTICS,
V
CC
=
V
CCA
=
V
CCO_A
=V
CCO_B
= 3.3V±10%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
f_OUT
Output Frequency
SELB0 = 1; OEB0 = 1
SELA0 = 0; OEA0 = 1
155.52
156.25
MHz
MHz
tsk(o) Output Skew; NOTE 1, 2
TBD
ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
155.52MHz, (12kHz - 1.3MHz)
156.25MHz, (1.875MHz - 20MHz)
0.86
0.52
ps
ps
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
475
ps
50
%
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: See Phase Noise plot.
843204AGI
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4
REV. A JANUARY 6, 2006