English
Language : 

ICS843246I Datasheet, PDF (5/17 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
◁
ICS843246I
FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER
TABLE 4D. LVPECL DC CHARACTERISTICS, VCC = 3.3V±5%, VCCO = 3.3V±5% OR 2.5V±5%, VEE = 0V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
VOH
Output High Voltage; NOTE 1
VOL
Output Low Voltage; NOTE 1
VSWING Peak-to-Peak Output Voltage Swing
NOTE 1: Outputs terminated with 50Ω to VCCO - 2V.
VCCO - 1.4
VCCO - 2.0
0.6
VCCO - 0.9
V
VCCO - 1.7
V
1.0
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
Fundamental
25
33.333
50
7
Units
MHz
Ω
pF
TABLE
6A.
AC
CHARACTERISTICS,
V
CC
=
V
CCO
=
3.3V±5%,
V
EE
=
0V,
TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
FOUT
Output Frequency
tjit(Ø) RMS Phase Jitter (Random)
125MHz, Integration Range:
1.875MHz - 20MHz
312.5MHz, Integration Range:
1.875MHz - 20MHz
40.833
0.41
0.47
tsk(o) Output Skew; NOTE 1, 2
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
200
45
See Parameter Measurement Information section.
NOTE 1: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential crossing points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
340
40
700
55
Units
MHz
ps
ps
ps
ps
%
TABLE 6B. AC CHARACTERISTICS, VCC = 3.3V±5%, VCCO = 2.5V±5%, VEE = 0V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
FOUT
Output Frequency
tjit(Ø) RMS Phase Jitter (Random)
tsk(o) Output Skew; NOTE 1, 2
125MHz, Integration Range:
1.875MHz - 20MHz
312.5MHz, Integration Range:
1.875MHz - 20MHz
40.833
0.44
0.46
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
200
45
See Parameter Measurement Information section.
NOTE 1: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential crossing points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
340
40
700
55
Units
MHz
ps
ps
ps
ps
%
IDT™ / ICS™ 3.3V LVPECL FREQUENCY SYNTHESIZER
5
ICS843246BGI REV. A AUGUST 2, 2007
 ▷