ICS813078I Datasheet, PDF (10/26 Pages) Integrated Device Technology – FEMTOCLOCKS™ VCXO-PLL FREQUENCY GENERATOR FOR WIRELESS INFRASTRUCTURE EQUIPMENT

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