
ICS844002-01
FEMTOCLOCKS CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
IDT / ICS LVDS FREQUENCY SYNTHESIZER
4
ICS844002AG-01 REV. A SEPTEMBER 28, 2007
Table 3C. LVCMOS/LVTTL DC Characteristics, VDD = VDDO = 3.3V ± 5% or 2.5V ± 5%, TA = 0°C to 70°C
Table 3D. LVDS DC Characteristics, VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C
Table 3E. LVDS DC Characteristics, VDD = VDDO = 2.5V ± 5%, TA = 0°C to 70°C
Table 4. Crystal Characteristics
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
VIH
Input High Voltage
3.465V
2
VDD + 0.3
V
2.625V
1.7
VDD + 0.3
V
VIL
Input Low Voltage
3.465V
-0.3
0.8
V
2.625V
-0.3
0.7
V
IIH
Input High Current
REF_CLK, MR,
FSEL0, FSEL1,
PLL_SEL, XTAL_SEL
VDD = VIN = 3.465V or
2.625V
150
A
IIL
Input Low Current
REF_CLK, MR,
FSEL0, FSEL1,
PLL_SEL, XTAL_SEL
VDD = 3.465V or 2.625V,
VIN = 0V
-5
A
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
VOD
Differential Output Voltage
300
600
mV
V
OD
VOD Magnitude Change
40
mV
VOS
Offset Voltage
1.3
1.5
1.7
V
OS
VOS Magnitude Change
50
mV
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
VOD
Differential Output Voltage
240
550
mV
V
OD
VOD Magnitude Change
40
mV
VOS
Offset Voltage
0.7
1.1
1.5
V
OS
VOS Magnitude Change
50
mV
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
Mode of Oscillation
Fundamental
Frequency
22.4
25
27.2
MHz
Equivalent Series Resistance (ESR)
50
Shunt Capacitance
7pF
Drive Level
1mW