MP8830
Parameter
Symbol
Min
Typ
Max Units
Test Conditions/Comments
3-State Leakage
I
–10
10 µA
In pass-through mode
OZ
Digital Timing Specifications2
For testing, rise time = fall time =
10 ns. Output loading = 60 pF except for
AD0-AD9 for which loading is 40 pF. Rise
and fall times faster than 5 ns should be
avoided.
AENL, BENL, CENL
Pulse Width
t
1
125
ns
D/A Data Hold Time
t
t
20
ns
ns
2
BENL Rising Edge to CENL Rising
Edge
270
3
AENL Rising Edge to CVL Falling
Edge
t
4
30
ns
D/A Data Setup Time
t
t
20
20
ns
ns
5
Analog Input Hold Time
Measured as part of analog feedthrough test.
6
Note, t
< t
+ t
tapmax
4min 6min.
CVL Rising Edge to AENL Rising
Edge
t
t
230
ns
7
A/D Data Enable Time
40 ns
CVL to Channel A data.
BENL to Channel B data.
CENL to Channel C data.
8
CENL Rising Edge to CVL Rising
Edge
t
t
40
50
20
ns
ns
9
Analog Input Settled to 0.1%
Assumes the sample is taken at the rising
edge of AENL.
10
A/D Data Hold Time
Aperture Delay
t
t
ns
11
20
40 ns
Analog sampling window delay from CVL ris-
ing (↑) edge (start) or AENL rising (↑) edge
(end).
AP
CVL Falling Edge to BENL Rising
Edge
t
12
t
13
t
14
t
15
t
16
t
17
180
ns
50 ns
50 ns
40 ns
40 ns
40 ns
Delay from CD5-14 to AD0-9 with
CREN=1
Delay from AD0-9 to CD5-14 with
CREN = 1
Delay from DCL Falling Edge to
Clamp on.
External analog clamp voltage settling de-
pends on external circuitry.
Delay from DCL Rising Edge to
Clamp off.
External analog clamp voltage settling de-
pends on external circuitry.
Time for AD0-9 and CD5-14 to switch
from normal operation to pass
through mode or vise versa (i.e. bus
contention).
0
User should stop driving the bus before
changing the mode and data will not be valid
for 40 ns after a change of mode.
Digital Quiet Time
t
15
ns
ns
This quiet time is necessary to reduce digital
crosstalk during the critical sampling time.
The accuracy of each conversion may be cor-
rupted due to digital noise on the board during
this period.
18
19
Digital Quiet Time
t
40
This quiet time is necessary to reduce digital
crosstalk during the critical sampling time.
The accuracy of each conversion may be cor-
rupted due to digital noise on the board during
this period.
Notes
1
Production testing performanced at 25°C.
2
Not production tested.
Rev. 1.00
6
EXAR [ EXAR CORPORATION ]
