參數(shù)資料
型號: MB89140
廠商: Fujitsu Limited
元件分類: 8位微控制器
英文描述: 8-bit Proprietary Microcontroller
中文描述: 8位微控制器專有
文件頁數(shù): 36/50頁
文件大?。?/td> 745K
代理商: MB89140
36
MB89140 Series
(1) A/D 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 difference between theoretical and actual values
This error is caused by the zero transition error, full-scale transition error, linearity error, quantization error and
noise.
(Continued)
3FF
3FE
3FD
004
003
002
001
V
OT
0.5 LSB
AV
SS
1 LSB
1.5 LSB
V
FST
AVR
3FF
3FE
3FD
004
003
002
001
V
NT
AVR
{1 LSB
×
N + 0.5 LSB}
1 LSB =
1022
(V)
V
NT
– {1 LSB
×
N + 0.5 LSB}
1 LSB
D
D
Total error for digital output N =
V
FST
– V
OT
Theoretical I/O characteristics
Total error
Actual conversion
value
Actual conversion
value
Theoretical value
Analog input
Analog input
AV
SS
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