
ICS844004-104
FEMTOCLOCKCRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
IDT / ICS LVDS FREQUENCY SYNTHESIZER
5
ICS844004AK-104 REV. A SEPTEMBER 15, 2008
AC Electrical Characteristics
Table 5A. AC Characteristics, VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions. Measured at the differential cross
points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plots.
Table 5B. AC Characteristics, VDD = VDDO = 2.5V ± 5%, TA = 0°C to 70°C
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions. Measured at the differential cross
points.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plots.
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
F_SEL[1:0] = 00
186.67
226.66
MHz
F_SEL[1:0] = 01
140
170
MHz
F_SEL[1:0] = 10
93.33
113.33
MHz
F_SEL[1:0] = 11
46.67
56.66
MHz
tsk(o)
Output Skew; NOTE 1, 2
35
ps
tjit()
RMS Phase Jitter, Random;
NOTE 3
212.5MHz, (637kHz - 10MHz)
0.73
ps
159.375MHz, (637kHz - 10MHz)
0.78
ps
106.25MHz, (637kHz -10MHz)
0.92
ps
53.125MHz, (637kHz - 10MHz)
0.95
ps
187.5MHz, (637kHz - 10MHz)
0.75
ps
tR / tF
Output Rise/Fall Time
20% to 80%
250
500
ps
odc
Output Duty Cycle
F_SEL[1:0]
≠ ÷3
48
52
%
F_SEL[1:0] = ÷3
40
60
%
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
F_SEL[1:0] = 00
186.67
226.66
MHz
F_SEL[1:0] = 01
140
170
MHz
F_SEL[1:0] = 10
93.33
113.33
MHz
F_SEL[1:0] = 11
46.67
56.66
MHz
tsk(o)
Output Skew; NOTE 1, 2
35
ps
tjit()
RMS Phase Jitter, Random;
NOTE 3
212.5MHz, (637kHz - 10MHz)
0.72
ps
159.375MHz, (637kHz - 10MHz)
0.88
ps
106.25MHz, (637kHz -10MHz)
0.89
ps
53.125MHz, (637kHz - 10MHz)
0.96
ps
187.5MHz, (637kHz - 10MHz)
0.74
ps
tR / tF
Output Rise/Fall Time
20% to 80%
250
550
ps
odc
Output Duty Cycle
F_SEL[1:0]
≠ ÷3
48
52
%
F_SEL[1:0] = ÷3
40
60
%