843003AGLF Datasheet, PDF (6/21 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

ICS843003
FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
Table 4C. LVPECL DC Characteristics, V_CC = V_CCA = V_{CCO_A} = V_{CCO_B} = 3.3V ± 5%, V_EE = 0V, T_A = 0°C to 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
V_OH
V_OL
V_SWING
Output High Current; NOTE 1
Output Low Current; NOTE 1
Peak-to-peak Output Voltage Swing
V_CCO – 1.4
V_CCO – 2.0
0.6
V_CCO – 0.9
µA
V_CCO – 1.7
µA
1.0
V
NOTE 1: Outputs termination with 50Ω to V_{CCO_A, _B} – 2V.
Table 5. Crystal Characteristics
Parameter
Test Conditions
Mode of Oscillation
Frequency
FB_DIV = ÷20
FB_DIV = ÷24
Equivalent Series Resistance (ESR)
Shunt Capacitance
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
28
31.25
35
23.33
26.04166 29.167
50
7
Units
MHz
MHz
Ω
pF
AC Electrical Characteristics
Table 6. AC Characteristics, V_CC = V_CCA = V_{CCO_A} = V_{CCO_B} = 3.3V ± 5%, V_EE = 0V, T_A = 0°C to 70°C
Parameter Symbol
Test Conditions
Minimum Typical Maximum
DIV_SELx[1:0] = 00
560
700
DIV_SELx[1:0] = 01
280
350
f_OUT
Output Frequency
DIV_SELx[1:0] = 10
140
175
DIV_SELx[1:0] = 11
112
140
tsk(b)
Bank Skew, NOTE 1
20
tsk(o)
Output Skew; NOTE 2, 4
Outputs @ Same Frequency
35
Outputs @ Different Frequencies
100
625MHz, (1.875MHz – 20MHz)
0.42
tjit(Ø)
RMS Phase Jitter, (Random); ^{312.5MHz, (1.875MHz – 20MHz)}
NOTE 3
156.25MHz, (1.875MHz – 20MHz)
0.50
0.51
125MHz, (1.875MHz – 20MHz)
0.52
t_R / t_F
Output Rise/Fall Time
20% to 80%
250
600
DIV_SELx[1:0] = 00
40
60
odc
Output Duty Cycle
DIV_SELx[1:0] ≠ 00
47
53
NOTE 1: Defined as skew within a bank of outputs at the same voltages and with equal load conditions.
NOTE 2: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at the output differential cross points.
NOTE 3: Please refer to the Phase Noise Plots.
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.
Units
MHz
MHz
MHz
MHz
ps
ps
ps
ps
ps
ps
ps
ps
%
%
IDT™ / ICS™ LVPECL FREQUENCY SYNTHESIZER
6
ICS843003AG REV. A OCTOBER 23, 2008