參數(shù)資料
型號: MB91267NAPMC
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP64
封裝: 12 X 12 MM, 1.70 MM HEIGHT, 0.65 MM PITCH, PLASTIC, LFQFP-64
文件頁數(shù): 43/56頁
文件大?。?/td> 473K
代理商: MB91267NAPMC
MB91265A Series
48
Definition of A/D Converter Terms
Resolution : Analog variation that is recognized by an A/D converter.
Linearity error : Zero transition point (00 0000 0000
←→ 00 0000 0001) and full-scale transition point.
Difference between the line connected (11 1111 1110
←→ 11 1111 1111) and actual conversion character-
istics.
Differential linearity error : Deviation of input voltage, that is required for changing output code by 1 LSB, from
an ideal value.
Total error : This error indicates the difference between actual and ideal values, including the zero transition
error/full-scale transition error/linearity error..
(Continued)
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVSS
AVRH
0.5 LSB'
{1 LSB' (N
1) + 0.5 LSB'}
1.5 LSB'
Digital
output
Analog input
Total error
Ideal characteristics
Actual conversion
characteristics
VNT
(measurement value)
Actual conversion
characteristics
N : A/D converter digital output value
VNT : A voltage at which digital output transits from (N
+ 1)H to NH.
VOT’ (Ideal value)
= AVSS + 0.5LSB’ [V]
VFST’ (Ideal value)
= AVRH 1.5 LSB’ [V]
1LSB’
(Ideal value)
=
AVRH
AVSS
[V] Total error of digital output N
=
VNT
{1 LSB’ × (N 1) + 0.5 LSB’}
1024
1 LSB’
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