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AD9218BST-40_01 View Datasheet(PDF) - Analog Devices

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AD9218BST-40_01 Datasheet PDF : 24 Pages
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AD9218–SPECIFICATIONS
SWITCHING SPECIFICATIONS (VDD = 3.0 V, VD = 3.0 V; external reference, unless otherwise noted.)
Parameter
Test
Temp Level
AD9218BST-40/-65
Min Typ Max
AD9218BST-80/-105
Min Typ Max
Unit
ENCODE INPUT PARAMETERS
Maximum Encode Rate
Full
VI
Minimum Encode Rate
Full
IV
Encode Pulsewidth High (tEH)
Encode Pulsewidth Low (tEL)
Aperture Delay (tA)
Aperture Uncertainty (Jitter)
Full
IV
Full
IV
25°C V
25°C V
40/65
7/6
7/6
2
3
20/20
80/105
5/3.8
5/3.8
2
3
20/20
MSPS
MSPS
ns
ns
ns
ps rms
DIGITAL OUTPUT PARAMETERS
Output Valid Time (tV)*
Output Propagation Delay (tPD)*
Output Rise Time (tR)
Output Fall Time (tF)
Out of Range Recovery Time
Full
VI
Full
VI
25°C V
25°C V
25°C V
Transient Response Time
25°C V
Recovery Time from Power-Down 25°C V
Pipeline Delay
Full
IV
3
4.5 7
1
1.2
5
5
10
5
3
4.5 6
1.0
1.2
5
5
10
5
ns
ns
ns
ns
ns
ns
Cycles
Cycles
NOTES
*tV and tPD are measured from the 1.5 level of the ENCODE input to the 50%/50% levels of the digital outputs swing. The digital output load during test is not to
exceed an ac load of 5 pF or a dc current of ± 40 µA. Rise and fall times measured from 10% to 90%.
Specifications subject to change without notice.
SAMPLE N
SAMPLE
N+1
AINA,
AINB
ENCODE
A&B
tA
tEH
tEL
1/fS
SAMPLE
N+2
SAMPLE
N+3
SAMPLE
N+5
SAMPLE
N+4
SAMPLE
N+6
D9AD0A
DATA N5
DATA N4
DATA N3
DATA N2
tPD
DATA N1
tV
DATA N
D9BD0B
DATA N5
DATA N4
DATA N3
DATA N2
DATA N1
DATA N
Figure 1. Normal Operation, Same Clock (S1 = 1, S2 = 0) Channel Timing
–4–
REV. 0
 

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