ICS813078I Datasheet, PDF (11/26 Pages) Integrated Device Technology – FEMTOCLOCKS™ VCXO-PLL FREQUENCY GENERATOR FOR WIRELESS INFRASTRUCTURE EQUIPMENT

ICS813078I
FEMTOCLOCKS™ VCXO-PLL FREQUENCY GENERATOR
Symbol Parameter
Single-Side
Φ_N
Band Noise at:
QAn = 61.44MHz
tsk(o)
tsk(b)
Output Skew
NOTE 2, 3
Bank Skew;
NOTE 2, 4
t_R / t_F
Output
Rise/ Fall Time
odc
Output
Duty Cycle
10Hz offset
100Hz offset
1kHz offset
10kHz offset
100kHz offset
1MHz offset
f_QA = f_QB
f_QA ≠ f_QB
QAn/nQAn
QBn/nQBn
QCn
QAn/nQAn
QBn/nQBn
QCn
QAn/nQAn
QBn/nQBn
QBn/nQBn
QCn
Test Conditions
30.72MHz XTAL,
f_ref = 30.72MHz,
QBn and QCn = 61.44MHz
across QAn and QBn
across QAn and QBn
20% to 80%
20% to 80%
20% to 80%
N≠1
N=1
Minimum
100
100
350
47
47
43
45
Typical
-44.6
-77.2
-106.4
-132.8
-132.9
-137.9
Maximum
200
300
50
50
65
600
600
1050
53
53
57
55
Units
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps
ps
ps
ps
ps
ps
ps
ps
%
%
%
%
NOTE: T_A, Ambient Temperature applied using forced air flow.
NOTE 1: Phase jitter measured using a 30.72MHz quartz crystal.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differential
cross points.
NOTE 4: Defined as skew within a bank of outputs at the same voltage and with equal load conditions.
FEMTOCLOCKS™ VCXO-PLL FREQUENCY GENERATOR
11
ICS813078BYI REV. A OCTOBER 6, 2008