AS1528-BTDT データシートの表示（PDF） - austriamicrosystems AG
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AS1528-BTDT Datasheet PDF : 21 Pages
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AS1528/AS1529
Data Sheet - Electrical Characteristics
Timing Characteristics
VDD = +2.7 to +5.25V, VREF = +2.5V, 4.7µF Capacitor at REF; fSCLK = 8MHz (50% Duty Cycle); AIN- = GND (AS1528)
TAMB = TMIN to TMAX (unless otherwise specified). Typical Values at TAMB = +25ºC.
Table 5. Timing Characteristics
Parameter
Symbol
Conditions
Min Typ Max Units
SCLK Pulse Width High
tCH
38
ns
SCLK Pulse Width Low
tCL
38
ns
SCLK Falling-to-DOUT
Transition
CLOAD = 30pF (see Figure 3, Figure 4,
tDOT
Figure 18 on page 11, Figure 19 on
page 11)
28
60
ns
SCLK Rising-to-DOUT1
Disable
CLOAD = 30pF (see Figure 3, Figure 4,
tDOD
Figure 18 on page 11, Figure 19 on 100 200 500
ns
page 11)
CNVST Falling-to-MSB Vlid
tCONV
CLOAD = 30pF (see Figure 3, Figure 4,
Figure 18 on page 11, Figure 19 on
page 11)
3.3
3.7
µs
CNVST Pulse Width
tCSW
30
ns
1. Guaranteed by Design and Characterisation.
Figure 3. DOUT Enable/Disable Time Load Circuits
DOUT
6kΩ
CLOAD
GND
GND
High-impedance to VOH, VOL to VOH, and VOH to High-impedance
DOUT
VDD
6kΩ
CLOAD
GND
Figure 4. Detailed Serial Interface Timing Diagram
CNVST
SCLK
DOUT
tCH
tCL
tCSW
tDOT
tDOD
High Z
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