ICS844004-104 Datasheet, PDF (5/16 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

ICS844004-104
FEMTOCLOCK™CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
AC Electrical Characteristics
Table 5A. AC Characteristics, V_DD = V_DDO = 3.3V ± 5%, T_A = 0°C to 70°C
Parameter Symbol
Test Conditions
F_SEL[1:0] = 00
f_OUT
Output Frequency
F_SEL[1:0] = 01
F_SEL[1:0] = 10
F_SEL[1:0] = 11
tsk(o)
Output Skew; NOTE 1, 2
212.5MHz, (637kHz - 10MHz)
tjit(Ø)
RMS Phase Jitter, Random;
NOTE 3
159.375MHz, (637kHz - 10MHz)
106.25MHz, (637kHz -10MHz)
53.125MHz, (637kHz - 10MHz)
187.5MHz, (637kHz - 10MHz)
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
F_SEL[1:0] ≠ ÷3
F_SEL[1:0] = ÷3
Minimum Typical Maximum Units
186.67
226.66 MHz
140
170
MHz
93.33
113.33 MHz
46.67
56.66 MHz
35
ps
0.73
ps
0.78
ps
0.92
ps
0.95
ps
0.75
ps
250
500
ps
48
52
%
40
60
%
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, V_DD = V_DDO = 2.5V ± 5%, T_A = 0°C to 70°C
Parameter Symbol
Test Conditions
F_SEL[1:0] = 00
f_OUT
Output Frequency
F_SEL[1:0] = 01
F_SEL[1:0] = 10
F_SEL[1:0] = 11
tsk(o)
Output Skew; NOTE 1, 2
212.5MHz, (637kHz - 10MHz)
tjit(Ø)
RMS Phase Jitter, Random;
NOTE 3
159.375MHz, (637kHz - 10MHz)
106.25MHz, (637kHz -10MHz)
53.125MHz, (637kHz - 10MHz)
187.5MHz, (637kHz - 10MHz)
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
F_SEL[1:0] ≠ ÷3
F_SEL[1:0] = ÷3
Minimum Typical Maximum Units
186.67
226.66 MHz
140
170
MHz
93.33
113.33 MHz
46.67
56.66 MHz
35
ps
0.72
ps
0.88
ps
0.89
ps
0.96
ps
0.74
ps
250
550
ps
48
52
%
40
60
%
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.
IDT™ / ICS™ LVDS FREQUENCY SYNTHESIZER
5
ICS844004AK-104 REV. A SEPTEMBER 15, 2008