
ICS813078I
FEMTOCLOCKS VCXO-PLL FREQUENCY GENERATOR
FEMTOCLOCKS VCXO-PLL FREQUENCY GENERATOR
10
ICS813078BYI REV. A OCTOBER 6, 2008
AC Electrical Characteristics
Table 5. AC Characteristics, VCC = VCCO = VCCO_CMOS = 3.3V ± 5%, TA = -40°C to 85°C
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
fREF
Input Reference Frequency
R=000
30.72MHz–50ppm
30.72MHz+50ppm
R=001
61.44MHz–50ppm
61.44MHz+50ppm
R=010
122.88MHz–50ppm
122.88MHz+50ppm
R=011
15.36MHz–50ppm
15.36MHz+50ppm
R=100
10MHz–50ppm
10MHz+50ppm
R=101
12.88MHz–50ppm
12.88MHz+50ppm
R=110
15MHz–50ppm
15MHz+50ppm
R=111
20MHz–50ppm
20MHz+50ppm
fOUT
Output Frequency
MF=0, N=1
491.52
MHz
MF=0, N=2
245.76
MHz
MF=0, N=4
122.88
MHz
MF=0, N=5
98.304
MHz
MF=0, N=8
61.44
MHz
MF=0, N=16
30.72
MHz
MF=1, N=1
614.4
MHz
MF=1, N=2
307.2
MHz
MF=1, N=4
153.6
MHz
MF=1, N=5
122.88
MHz
MF=1, N=8
76.8
MHz
MF=1, N=16
38.4
MHz
fVCXO
VCXO-PLL VCO Lock Range
30.72MHz–50ppm
30.72MHz+50ppm
fVCO
Femto-PLL VCO Lock Range
491.52, 614.4
MHz
tjit()
RMS Phase Jitter
Integration Range:
12kHz - 20MHz;
NOTE 1
QBn
491.52MHz
1.03
ps
QAn, QBn
153.6MHz, MF=20
0.92
ps
QAn, QBn
122.88MHz, MF=20
1.1
ps
QAn, QBn
122.88MHz, MF=16
1.1
ps
QAn, QBn
61.44MHz, MF=16
0.97
ps
tjit(per)
Period Jitter
QAn
QBn
153.6MHz, QCn = off
122.88MHz, QCn = off
35
ps
QAn, QBn
122.88MHz, QCn = off
30
ps
Φ
N
Single-Side
Band Noise at:
QAn =122.88MHz
10Hz offset
30.72MHz XTAL,
fref = 30.72MHz,
QBn and QCn = 122.88MHz
-41.3
dBc/Hz
100Hz offset
-71.5
dBc/Hz
1kHz offset
-100.7
dBc/Hz
10kHz offset
-127.2
dBc/Hz
100kHz offset
-128.2
dBc/Hz
1MHz offset
-131.4
dBc/Hz
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