ICS844801I-24 Datasheet, PDF (4/13 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-LVDS 400MHZ FREQUENCY SYNTHESIZER

ICS844801I-24
FEMTOCLOCKS™ CRYSTAL-TO-LVDS 400MHZ FREQUENCY SYNTHESIZER
PRELIMINARY
TABLE
3D.
LVDS
DC
CHARACTERISTICS,
V
DD
=
V
DDA
=
2.5V±5%,
TA
=
-40°C
TO
85°C
Symbol Parameter
Test Conditions
Minimum
V_OD
Differential Output Voltage
∆ V_OD
V_OD Magnitude Change
V_OS
Offset Voltage
∆ V_OS
V_OS Magnitude Change
NOTE: Please refer to Parameter Measurement Information for output information.
Typical
380
40
1.17
50
Maximum
Units
mV
mV
V
mV
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
Test Conditions
Minimum Typical Maximum
Fundamental
21.5625
25.3125
50
7
1
Units
MHz
Ω
pF
mW
TABLE
5A.
AC
CHARACTERISTICS,
V
DD
=
V
DDA
=
3.3V±5%,
TA
=
-40°C
TO
85°C
Symbol Parameter
Test Conditions
f_OUT
Output Frequency
tjit(Ø)
RMS Phase Jitter ( Random);
NOTE 1
200MHz @ Integration Range:
12kHz - 20MHz
400MHz @ Integration Range:
12kHz - 20MHz
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
NOTE 1: Please refer to the Phase Noise Plots following this section.
Minimum
172.5
345
Typical
Maximum
202.5
405
Units
MHz
MHz
0.62
ps
0.57
ps
305
ps
50
%
TABLE 5B. AC CHARACTERISTICS, V_DD = V_DDA = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
f_OUT
Output Frequency
tjit(Ø)
RMS Phase Jitter ( Random);
NOTE 1
200MHz @ Integration Range:
12kHz - 20MHz
400MHz @ Integration Range:
12kHz - 20MHz
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
NOTE 1: Please refer to the Phase Noise Plots following this section.
Minimum
172.5
345
Typical
Maximum
202.5
405
Units
MHz
MHz
0.64
ps
0.57
ps
310
ps
50
%
IDT^™ / ICS^™ LVDS 400MHZ FREQUENCY SYNTHESIZER
4
ICS844801AGI-24 REV A JANUARY 16, 2008