ICS844001-21 Datasheet, PDF (5/17 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

ICS844001-21
FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
PRELIMINARY
TABLE 4C. LVDS DC CHARACTERISTICS, V_DD = V_{DDO_LVDS} = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
V_OD
Δ V_OD
V_OS
Δ V_OS
Differential Output Voltage
V_OD Magnitude Change
Offset Voltage
V Magnitude Change
OS
Typical
400
50
1.5
50
Maximum
Units
mV
mV
V
mV
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
12
40
50
7
1
Units
MHz
MHz
Ω
pF
mW
TABLE 6.
AC
CHARACTERISTICS,
V
DD
=
V
DDO_LVDS
=V
DDO_CMOS
= 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
f
Output Frequency
56
OUT
t_PD
Propagation Delay, REF_CLK to
NOTE 1
REF_OUT
tjit(Ø)
RMS Phase Jitter, (Random);
NOTE 2, 3
622.08MHz (12kHz - 20MHz)
t_R / t_F
Output
Rise/Fall Time
Q, nQ
REF_OUT
20% to 80%
20% to 80%
Q, nQ
odc
Output Duty Cycle
REF_OUT
NOTE 1: Measured from the V_DD/2 of the input to V_{DDO_CMOS}/2 of the output.
NOTE 2: Phase jitter measured using a 25MHz quartz crystal.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Typical
2.95
0.92
300
300
50
50
Maximum Units
700
MHz
ns
ps
ps
ps
%
%
IDT^™ / ICS^™ INSERT PRODUCT NAME
5
ICS844001AG-21 REV. A SEPTEMBER 14, 2007