ICS848004I Datasheet, PDF (5/11 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-SSTL_2 FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS848004I
FEMTOCLOCKS™ CRYSTAL-TO-
SSTL_2 FREQUENCY SYNTHESIZER
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
23.33 26.5625 28.33
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5. AC CHARACTERISTICS, TA = -40°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
TBD
212.5MHz, (637kHz - 10MHz)
0.80
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
159.375MHz, (637kHz - 10MHz)
156.25MHz, (1.875MHz - 20MHz)
106.25MHz, (637kHz - 10MHz)
0.78
0.50
0.81
53.125MHz, (637kHz - 10MHz)
0.79
t_R / t_F
Output Rise/Fall Time
20% to 80%
650
odc
Output Duty Cycle
50
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V /2.
DDO
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plot.
Maximum
226.66
170
113.33
56.66
Units
MHz
MHz
MHz
MHz
ps
ps
ps
ps
ps
ps
ps
%
848004AGI
www.icst.com/products/hiperclocks.html
5
REV. A AUGUST 18, 2005