AS1538/AS1540
Data Sheet - Typical Operating Characteristics
7 Typical Operating Characteristics
VDD = 3.6V; VREF = 2.5V (internal), fSCL = 3.4MHz, CREF = 4.7µF, TAMB = +25ºC (unless otherwise specified).
Figure 4. DNL vs. Digital Output Code, Int. Reference
Figure 5. INL vs. Digital Output Code, Int. Reference
1.2
1
f
= 50ksps
f
= 50ksps
SAMPLE
SAMPLE
0.8
0.6
0.4
0.2
0
0.8
0.4
0
-0.2
-0.4
-0.6
-0.8
-1
-0.4
-0.8
-1.2
0
1024
2048
3072
4096
0
1024
2048
3072
4096
Digital Output Code
Digital Output Code
Figure 6. DNL vs. Digital Output Code, Ext. Reference
Figure 7. INL vs. Digital Output Code, Ext. Reference
1
1.2
f
= 50ksps
f
= 50ksps
SAMPLE
SAMPLE
0.8
0.6
0.4
0.2
0
0.8
0.4
0
-0.2
-0.4
-0.6
-0.8
-1
-0.4
-0.8
-1.2
0
1024
2048
3072
4096
0
1024
2048
3072
4096
Digital Output Code
Digital Output Code
Figure 8. Offset Error vs. Temperature
Figure 9. Offset Matching vs. Temperature
1
6
0.8
0.6
0.4
0.2
0
4
2
0
-0.2
-0.4
-0.6
-0.8
-1
-2
-4
-6
-45 -30 -15
0
15 30 45 60 75 90
-45 -30 -15
0
15 30 45 60 75 90
Temperature (°C)
Temperature (°C)
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Revision 1.03
7 - 20
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