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ST7LITEUS2, ST7LITEUS5
Electrical characteristics
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Figure 64.
ADC accuracy characteristics
1.
Example of an actual transfer curve
2.
The ideal transfer curve
3.
End point correlation line
4.
E
T
=Total Unadjusted Error: maximum deviation between the actual and the ideal transfer curves.
5.
E
O
=Offset Error: deviation between the first actual transition and the first ideal one.
6.
E
G
=Gain Error: deviation between the last ideal transition and the last actual one.
7.
E
D
=Differential Linearity Error: maximum deviation between actual steps and the ideal one.
8.
E
L
=Integral Linearity Error: maximum deviation between any actual transition and the end point correlation
line.
E
O
E
G
1 LSB
IDEAL
1LSBIDEAL
VDD VSS
–
1024
--------------------------------
=
V
in
(LSB
IDEAL
)
Digital Result ADCDR
1023
1022
1021
5
4
3
2
1
0
7
6
1
2
3
4
5
6
7
1021 1022 1023 1024
(1)
(2)
E
T
E
D
E
L
(3)
V
DD
V
SS
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