
ICS844002-01
FEMTOCLOCKS CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
IDT / ICS LVDS FREQUENCY SYNTHESIZER
5
ICS844002AG-01 REV. A SEPTEMBER 28, 2007
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 VDDO/2.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plot.
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 VDDO/2.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Please refer to the Phase Noise Plot.
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
FSEL[1:0] = 00
140
170
MHz
FSEL[1:0] = 01
112
136
MHz
FSEL[1:0] = 10
56
68
MHz
tsk(o)
Output Skew; NOTE 1, 2
5
20
ps
tjit()
RMS Phase Jitter, (Random);
NOTE 3
156.25MHz, (1.875MHz – 20MHz)
0.41
ps
125MHz, (1.875MHz – 20MHz)
0.44
ps
62.5MHz, (1.875MHz – 20MHz)
0.47
ps
tR / tF
Output Rise/Fall Time
20% to 80% @ 50MHz
250
550
ps
odc
Output Duty Cycle
48
52
%
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
FSEL[1:0] = 00
140
170
MHz
FSEL[1:0] = 01
112
136
MHz
FSEL[1:0] = 10
56
68
MHz
tsk(o)
Output Skew; NOTE 1, 2
5
20
ps
tjit()
RMS Phase Jitter, (Random);
NOTE 3
156.25MHz, (1.875MHz – 20MHz)
0.41
ps
125MHz, (1.875MHz – 20MHz)
0.44
ps
62.5MHz, (1.875MHz – 20MHz)
0.47
ps
tR / tF
Output Rise/Fall Time
20% to 80% @ 50MHz
250
550
ps
odc
Output Duty Cycle
48
52
%