ICS844004I-04 Datasheet, PDF (4/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL/LVCMOS-TO-LVDS FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844004I-04
FEMTOCLOCKS™ CRYSTAL/LVCMOS-TO-
LVDS FREQUENCY SYNTHESIZER
TABLE 5. 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
17.5
21.25
50
7
1
Units
MHz
Ω
pF
mW
TABLE 6.
AC
CHARACTERISTICS,
V=
DD
V=
DDA
V
DDO
= 3.3V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
f_OUT
Output Frequency
Output Divider = ÷1
560
680
Output Divider = ÷4
140
170
tsk(o) Output Skew; NOTE 1, 2
TBD
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
155.52MHz,
Integration Range: 12kHz - 20MHz
156.25MHz,
Integration Range: 1.875MHz - 20MHz
622.08MHz,
Integration Range: 12kHz - 20MHz
0.75
0.51
0.71
t /t
Output Rise/Fall Time
20% to 80%
290
RF
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_DDO/2.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plot.
MHz
MHz
ps
ps
ps
ps
ps
%
844004AGI-04
www.icst.com/products/hiperclocks.html
4
REV. A JANUARY 26, 2006