ICS843001-21 Datasheet, PDF (5/15 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843001-21
FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER
TABLE 4C. LVPECL DC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
V_OH
Output High Voltage; NOTE 1
V_OL
Output Low Voltage; NOTE 1
V_SWING Peak-to-Peak Output Voltage Swing
NOTE 1: Outputs terminated with 50Ω to V_{CCO_PECL} - 2V.
V_CCO - 1.4
V_CCO - 2.0
0.6
Typical
Maximum
V_CCO - 0.9
V_CCO - 1.7
1.0
Units
V
V
V
TABLE 5. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum Units
Fundamental
MHz
12
40
MHz
50
Ω
7
pF
TABLE 6. AC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
f_OUT
Output Frequency
56
t_PD
Propagation Delay, TEST_CLK to
NOTE 1
REF_CLK
2.3
tjit(Ø)
RMS Phase Jitter, (Random);
NOTE 2, 3
622.08MHz (12kHz - 20MHz)
f_VCO
t_R / t_F
PLL VCO Lock Range
Output
Rise/Fall Time
LVPECL
LVCMOS
560
20% to 80%
200
20% to 80%
300
LVPECL
45
odc
Output Duty Cycle
LVCMOS
44
NOTE 1: Measured from the V_CC/2 of the input to V_{CCO_CMOS}/2 of the output.
NOTE 2: Phase jitter measured using a 19.44MHz quartz crystal.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Typical
0.80
Maximum Units
700
MHz
2.8
ns
ps
700
MHz
500
ps
800
ps
55
%
56
%
843001AG-21
www.icst.com/products/hiperclocks.html
5
REV. A OCTOBER 26, 2005