ICS844008I-46 Datasheet, PDF (4/15 Pages) Integrated Device Technology – FEMTOCLOCKS CRYSTAL-TO-LVDS CLOCK GENERATOR

ICS844008I-46
FEMTOCLOCKS™ CRYSTAL-TO-LVDS CLOCK GENERATOR
TABLE 5. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Test Conditions
Shunt Capacitance
Drive Level
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
25
50
7
300
Units
MHz
Ω
pF
µW
TABLE 6. AC CHARACTERISTICS, V_DD = V_DDO = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
f_OUT
Output Frequency
FREQ_SEL = 0
FREQ_SEL = 1
156.25
100
MHz
MHz
tsk(o) Output Skew; NOTE 1, 2
75
ps
tjit(cc) Cycle-to-Cycle Jitter
20
ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
156.25MHz (1.875MHz - 20MHz)
100MHz (1.875MHz - 20MHz)
0.45
0.52
ps
ps
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
300
48
700
ps
52
%
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at the differential cross points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plot.
IDT^™ / ICS^™ LVDS CLOCK GENERATOR
4
ICS844008AKI-46 REV. A MAY 19, 2008