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MB90378 Datasheet(PDF) 57 Page - Fujitsu Component Limited.

Part No. MB90378
Description  16-bit Proprietary Microcontroller
Download  65 Pages
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Maker  FUJITSU [Fujitsu Component Limited.]
Homepage  http://edevice.fujitsu.com/fmd/en/index.html
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MB90378 Datasheet(HTML) 57 Page - Fujitsu Component Limited.

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MB90378 Series
57
6.
A/D Converter Glossary
Resolution : Analog changes that are identifiable with the A/D converter.
Linearity error : The deviation of the straight line connecting the zero transition point (“00 0000 0000”
“00 0000 0001”) with the full-scale transition point (“11 1111 1110”
↔ “11 1111 1111”) from
actual conversion characteristics.
Differential linearity error : The deviation of input voltage needed to change the output code by 1 LSB from the
theoretical value.
Total error : The total error is defined as a difference between the actual value and the theoretical value, which
includes zero-transition error/full-scale transition error and linearity error.
(Continued)
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVRL
AVRH
VNT
0.5 LSB
0.5 LSB
{1 LSB
× (N − 1) + 0.5 LSB}
Actual conversion
value
(Measured value)
Actual conversion
value
Theoretical
characteristics
Analog input
Total error for digital output N
=
VNT
− {1 LSB × (N − 1) + 0.5 LSB}
1 LSB
[LSB]
1 LSB (Theoretical value)
=
AVR
− AVss
1024
[V]
VOT (Theoretical value)
= AVss + 0.5 LSB [V]
VFST (Theoretical value)
= AVR − 1.5 LSB [V]
VNT : Voltage at a transition of digital output from (N
− 1) to N
Total error


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