ICS843301I-108 Datasheet, PDF (4/15 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V LVPECL 75MHZ FREQUENCY SYNTHESIZER W/SSC

ICS843301I-108
FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER W/SSC
PRELIMINARY
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
Test Conditions
Minimum Typical Maximum
Fundamental
20
90
7
300
Units
MHz
Ω
pF
µW
TABLE 5A. AC CHARACTERISTICS, V_CC = 3.3V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
tjit(Ø)
F_M
F_MF
Output Frequency
RMS Phase Jitter,
(Random); NOTE 1, 2
SSC Modulation Frequency;
NOTE 3
SSC Modulation Factor;
NOTE 3
75MHz
(Integration Range: 900kHz - 7.5MHz)
F_OUT = 75MHz
F_OUT = 75MHz
SSC_red Spectral Reduction; NOTE 3
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
NOTE 1: Please refer to the Phase Noise Plot.
NOTE 2: Spread Spectrum clocking disabled.
NOTE 3: Spread Spectrum clocking enabled.
F_OUT = 75MHz
20% to 80%
Minimum Typical
75
0.73
29
0.5
8
475
50
Maximum Units
MHz
ps
33.33 kHz
%
dB
ps
%
TABLE 5B. AC CHARACTERISTICS, V_CC = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
tjit(Ø)
F_M
F
MF
Output Frequency
RMS Phase Jitter,
(Random); NOTE 1, 2
SSC Modulation Frequency;
NOTE 3
SSC Modulation Factor;
NOTE 3
75MHz
(Integration Range: 900kHz - 7.5MHz)
F_OUT = 75MHz
F = 75MHz
OUT
SSC_red Spectral Reduction; NOTE 3
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
NOTE 1: Please refer to the Phase Noise Plot.
NOTE 2: Spread Spectrum clocking disabled.
NOTE 3: Spread Spectrum clocking enabled.
F_OUT = 75MHz
20% to 80%
Minimum Typical
75
0.72
29
0.4
7.5
450
50
Maximum Units
MHz
ps
33.33 kHz
%
dB
ps
%
IDT^™ / ICS^™ 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER W/SSC 4
ICS843301BGI-108 REV. A OCTOBER 9, 2007