AD9551
Parameter
Min
Typ
Max
55
745
Unit
%
ps
Test Conditions/Comments
Duty Cycle
Rise/Fall Time1 (20% to 80%)
45
At maximum output frequency
3.3 V CMOS; standard drive strength
setting; 10 pF load
500
1 The listed values are for the slower edge (rise or fall).
JITTER CHARACTERISTICS (180 HZ LOOP BANDWIDTH)
Table 3.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
JITTER GENERATION
12 kHz to 20 MHz
1.3
0.8
0.5
0.6
0.1
180
ps rms
ps rms
ps rms
ps rms
ps rms
Hz
fIN = 19.44 MHz, fOUT = 622.08 MHz
fIN = 622.08 MHz, fOUT = 622.08 MHz
fIN = 19.44 MHz, fOUT = 622.08 MHz
fIN = 622.08 MHz, fOUT = 622.08 MHz
fIN = 622.08 MHz, fOUT = 622.08 MHz
50 kHz to 80 MHz
4 MHz to 80 MHz
JITTER TRANSFER BANDWIDTH
See the Typical Performance
Characteristics section
JITTER TRANSFER PEAKING
0.1
dB
See the Typical Performance
Characteristics section
CRYSTAL OSCILLATOR CHARACTERISTICS
Table 4.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
CRYSTAL FREQUENCY
Range
Tolerance
19
26
52
20
MHz
ppm
Ω
CRYSTAL MOTIONAL RESISTANCE
100
DCXO LOAD CAPACITANCE CONTROL
RANGE
3 to 21
pF
Requires a crystal with a 10 pF load
specification
POWER CONSUMPTION
Table 5.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
TOTAL CURRENT
169
195
mA
At maximum output frequency with both
output channels active
VDD CURRENT BY PIN
Pin 9
Pin 23
Pin 27
Pin 34
24
78
36
36
38
27
84
42
42
mA
mA
mA
mA
mA
LVPECL OUTPUT DRIVER
900 MHz with 100 Ω termination between
both pins of the output driver
Rev. B | Page 5 of 40