AS1528/AS1529
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Timing Characteristics
V
DD
= +2.7 to +5.25V, V
REF
= +2.5V, 4.7µF Capacitor at REF; f
SCLK
= 8MHz (50% Duty Cycle); AIN- = GND (AS1528)
T
AMB
= T
MIN
to TMAX (unless otherwise specified). Typical Values at T
AMB
= +25ºC.
Table 5. Timing Characteristics
Parameter
SCLK Pulse Width High
SCLK Pulse Width Low
SCLK Falling-to-DOUT
Transition
SCLK Rising-to-DOUT
Disable
1
Symbol
t
CH
t
CL
t
DOT
Conditions
Min
38
38
Typ
Max
Units
ns
ns
C
LOAD
= 30pF (see
C
LOAD
= 30pF (see
C
LOAD
= 30pF (see
30
100
28
60
ns
t
DOD
200
500
ns
CNVST Falling-to-MSB Vlid
CNVST Pulse Width
t
CONV
tCSW
3.3
3.7
µs
ns
1. Guaranteed by Design and Characterisation.
Figure 3. DOUT Enable/Disable Time Load Circuits
V
DD
DOUT
6kΩ
C
LOAD
DOUT
GND
GND
C
LOAD
6kΩ
High-impedance to V
OH
, V
OL
to V
OH
, and V
OH
to High-impedance
GND
Figure 4. Detailed Serial Interface Timing Diagram
CNVST
t
CL
SCLK
t
CH
t
CSW
t
DOT
DOUT
t
DOD
High Z
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