ICS84427 Datasheet, PDF (4/13 Pages) Integrated Circuit Systems – CRYSTAL-TO-LVDS INTEGRATED FREQUENCY SYNTHESIZER/FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
PRELIMINARY
ICS84427
CRYSTAL-TO-LVDS
INTEGRATED FREQUENCY SYNTHESIZER/FANOUT BUFFER
Test Conditions
Minimum Typical Maximum
Fundamental
19.44
25.5
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5. AC CHARACTERISTICS, V_CC = V_CCA = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical
F_OUT
Output Frequency
77.76
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 1
155.52MHz,
(Integration Range: 12kHz-20MHz)
3.4
tsk(o) Output Skew; NOTE 2, 3
40
t_{R /} t_F
Output Rise/Fall Time
odc
Output Duty Cycle
20% to 80%
400
45
50
t_LOCK
PLL Lock Time
See Parameter Measurement Information section.
NOTE 1: See Phase Noise Plots.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential crossing points.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
625
55
1
Units
MHz
ps
ps
ps
%
ms
84427CM
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4
REV. D NOVEMBER 30, 2005