AD9433 datasheet(5/20 Pages) AD

5 / 20 page

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

105

125

MSPS

Encode Pulse Width High (tEH)

Full

2.9

2.4

Encode Pulse Width Low (tEL)

Full

2.9

2.4

Aperture Delay (tA)

25°C

2.1

Aperture Uncertainty (Jitter)1

25°C

0.25

ps rms

Output Valid Time (tV)2

Full

2.5

4.0

2.5

4.0

Output Propagation Delay (tPD)2

Full

4.0

5.5

4.0

5.5

Output Rise Time (tR)2

Full

2.1

Output Fall Time (tF)2

Full

1.9

Out-of-Range Recovery Time

25°C

Transient Response Time

25°C

Latency

Full

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

SAMPLE N – 1

SAMPLE N + 1

SAMPLE N + 8

SAMPLE N + 9

SAMPLE N + 10

SAMPLE N

AIN

ENCODE

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

Figure 2. Timing Diagram

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