
AD9433
Rev. A | Page 5 of 20
SWITCHING SPECIFICATIONS
VDD = 3.3 V, VCC = 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 (tEH)
Full
IV
2.9
2.4
ns
Encode Pulse Width Low (tEL)
Full
IV
2.9
2.4
ns
Aperture Delay (tA)
25°C
V
2.1
ns
Aperture Uncertainty (Jitt
er)125°C
V
0.25
ps rms
Full
VI
2.5
4.0
2.5
4.0
ns
Output Propagation Delay (t
PD)2Full
VI
4.0
5.5
4.0
5.5
ns
Full
V
2.1
ns
Full
V
1.9
ns
Out-of-Range Recovery Time
25°C
V
2
ns
Transient Response Time
25°C
V
2
ns
Latency
Full
IV
10
Cycles
1 Aperture uncertainty includes contribution of the AD9433, crystal clock reference, and encode drive circuit.
2 tV and tPD 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
tEL
tEH
tA
1/
fS
SAMPLE N – 1
SAMPLE N + 1
SAMPLE N + 8
SAMPLE N + 9
SAMPLE N + 10
SAMPLE N
AIN
ENCODE
tV
tPD
DATA N – 11
DATA N – 10
DATA N – 1
DATA N
DATA N + 1
DATA
N – 9
DATA
N – 2
D11 TO D0
ENCODE
01
97
7-
0
03
Figure 2. Timing Diagram