ICS843002I-01 Datasheet, PDF (4/15 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843002I-01
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
TABLE 3D. LVPECL DC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±10% OR 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
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 - 2V.
V_CCO - 1.4
V_CCO - 2.0
0.6
V_CCO - 0.9
V
V_CCO - 1.7
V
1.0
V
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Test Conditions
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
22.4
25
27.2
50
7
1
Units
MHz
Ω
pF
mW
TABLE 5A. AC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±10%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
F_SEL[1:0] = 00
140
f
Output Frequency
OUT
F_SEL[1:0] = 01
112
F_SEL[1:0] = 10
56
tsk(o) Output Skew; NOTE 1, 2
156.25MHz, (1.875MHz - 20MHz)
0.55
tjit(Ø) RMS Phase Jitter; NOTE 2, 3
125MHz, (1.875MHz - 20MHz)
0.60
62.5MHz, (1.875MHz - 20MHz)
0.70
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
350
48
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at the output differential cross points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Measured using crystal input.
Maximum
170
136
68
30
650
52
Units
MHz
MHz
MHz
ps
ps
ps
ps
ps
%
TABLE 5B. AC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
f_OUT
tsk(o)
Output Frequency
Output Skew; NOTE 1, 2
Test Conditions
F_SEL[1:0] = 00
F_SEL[1:0] = 01
F_SEL[1:0] = 10
Minimum
140
112
56
156.25MHz, (1.875MHz - 20MHz)
tjit(Ø) RMS Phase Jitter; NOTE 2, 3 125MHz, (1.875MHz - 20MHz)
62.5MHz, (1.875MHz - 20MHz)
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
For Notes, see Table 5A above.
843002AGI-01
20% to 80%
350
48
www.icst.com/products/hiperclocks.html
Typical
0.55
0.60
0.74
Maximum
170
136
68
30
650
52
Units
MHz
MHz
MHz
ps
ps
ps
ps
ps
%
REV. A JANUARY 6, 2006
4