ICS843204I Datasheet, PDF (4/16 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

ICS843204I
FEMTOCLOCK™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
TABLE 3C. LVPECL DC CHARACTERISTICS, V_CC = V_{CCO_A} = V_{CCO_B} = 3.3V±10%, V_EE = 0V, T_A = -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
Test Conditions
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
19.44
25
50
7
Units
MHz
Ω
pF
TABLE 5.
AC
CHARACTERISTICS,
V
CC
=
V
CCO_A
=V
CCO_B
=
3.3V±10%,
V
EE
=
0V,
T
A
=
-40°C
TO
85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
f_OUT
Output Frequency
SELB0 = 1; OEB0 = 1
SELA0 = 0; OEA0 = 1
155.52
156.25
MHz
MHz
tsk(b) Bank Skew; NOTE 1, 2
50
ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
155.52MHz, (12kHz - 20MHz)
156.25MHz, (1.875MHz - 20MHz)
0.98
0.52
ps
ps
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
250
47
600
ps
53
%
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established
when the device is mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet
specifications after thermal equilibrium has been reached under these conditions.
NOTE 1: Defined as skew within a bank of outputs at the same supply voltage and with equal load conditions.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: See Phase Noise plot.
IDT^™ / ICS^™ 3.3V LVPECL FREQUENCY SYNTHESIZER
4
ICS843204AGI REV. A MARCH 18, 2009