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MB90350E Datasheet(PDF) 77 Page - Fujitsu Component Limited.

No. de Pieza. MB90350E
Descripción  16-bit Proprietary Microcontrollers
Descarga  85 Pages
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Fabricante  FUJITSU [Fujitsu Component Limited.]
Página de inicio  http://edevice.fujitsu.com/fmd/en/index.html
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MB90350E Datasheet(HTML) 77 Page - Fujitsu Component Limited.

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MB90350E Series
77
6.
Definition of A/D Converter Terms
(Continued)
Resolution
: Analog variation that is recognized by an A/D converter.
Non linearity
error
: Deviation between a line across zero-transition line ( “00 0000 0000”
← → “00 0000 0001” )
and full-scale transition line ( “11 1111 1110”
← → “11 1111 1111” ) and actual conversion
characteristics.
Differential
linearity error
: Deviation of input voltage, which is required for changing output code by 1 LSB, from an ideal
value.
Total error
: Difference between an actual value and a theoretical value. A total error includes zero
transition error, full-scale transition error, and linear error.
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVSS
AVRH
VNT
1.5 LSB
0.5 LSB
{1 LSB
× (N − 1) + 0.5 LSB}
Actual conversion
characteristics
(Actual measurement value)
Actual conversion
characteristics
Ideal characteristics
Analog input
Total error
Total error of digital output “N”
=
VNT
− {1 LSB × (N − 1) + 0.5 LSB}
1 LSB
[LSB]
1 LSB (Ideal value)
=
AVRH
− AVSS
1024
[V]
N
: A/D converter digital output value
VOT (Ideal value)
= AVSS + 0.5 LSB [V]
VFST (Ideal value)
= AVRH − 1.5 LSB [V]
VNT : A voltage at which digital output transits from (N
− 1) to N.


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