Datasheet

AD9433
Rev. A | Page 5 of 20
SWITCHING SPECIFICATIONS
V
DD
= 3.3 V, V
CC
= 5 V; differential encode input, unless otherwise noted.
Table 3.
Test 105 MSPS 125 MSPS
Parameter Temp Level Min Typ Max Min Typ Max Unit
Encode Rate Full IV 10 105 10 125 MSPS
Encode Pulse Width High (t
EH
) Full IV 2.9 2.4 ns
Encode Pulse Width Low (t
EL
) Full IV 2.9 2.4 ns
Aperture Delay (t
A
) 25°C V 2.1 2.1 ns
Aperture Uncertainty (Jitter)
1
25°C V 0.25 0.25 ps rms
Output Valid Time (t
V
)
2
Full VI 2.5 4.0 2.5 4.0 ns
Output Propagation Delay (t
PD
)
2
Full VI 4.0 5.5 4.0 5.5 ns
Output Rise Time (t
R
)
2
Full V 2.1 2.1 ns
Output Fall Time (t
F
)
2
Full V 1.9 1.9 ns
Out-of-Range Recovery Time 25°C V 2 2 ns
Transient Response Time 25°C V 2 2 ns
Latency Full IV 10 10 Cycles
1
Aperture uncertainty includes contribution of the AD9433, crystal clock reference, and encode drive circuit.
2
t
V
and t
PD
are measured from the transition points of the ENCODE input to the 50%/50% levels of the digital output swing. The digital output load during testing is not
to exceed an ac load of 10 pF or a dc current of 50 μA. Rise and fall times are measured from 10% to 90%.
TIMING DIAGRAM
t
EL
t
EH
t
A
1/ f
S
SAMPLE N – 1
SAMPLE N + 1
SAMPLE N + 8
SAMPLE N + 9
SAMPLE N + 10
SAMPLE N
AIN
ENCODE
t
V
t
PD
DATA N – 11 DATA N – 10 DATA N – 1 DATA N DATA N + 1
DATA
N – 9
DATA
N – 2
D11 TO D0
ENCODE
01977-003
Figure 2. Timing Diagram