ICS843002 Datasheet, PDF (4/16 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843002
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
23.33 26.5625 28.33
50
7
Units
MHz
Ω
pF
TABLE 5. AC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±10%, TA = -30°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
F_SEL[1:0] = 00
186.67
f_OUT
Output Frequency
F_SEL[1:0] = 01
F_SEL[1:0] = 10
140
93.33
F_SEL[1:0] =11
46.67
tsk(o) Output Skew; NOTE 1, 2
212.5MHz, (637KHz - 10MHz)
0.72
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
159.375MHz, (637KHz - 10MHz)
106.25MHz, (637KHz - 10MHz)
0.76
0.84
53.125MHz, (637KHz - 10MHz)
0.97
t_R / t_F
Output Rise/Fall Time
20% to 80%
300
odc
Output Duty Cycle
F_SEL[1:0] =00
46
F_SEL[1:0] ≠ 00
49
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V /2.
CCO
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: See Phase Noise plot.
Maximum
226.67
170
113.33
56.67
20
600
54
51
Units
MHz
MHz
MHz
MHz
ps
ps
ps
ps
ps
ps
%
%
843002AG
www.icst.com/products/hiperclocks.html
4
REV. B MAY 6, 2005