參數(shù)資料
型號(hào): MB90P623A
廠商: Fujitsu Limited
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16位微控制器專(zhuān)有
文件頁(yè)數(shù): 56/80頁(yè)
文件大小: 1304K
代理商: MB90P623A
MB90620A Series
56
6. A/D Converter Glossary
Resolution
Analog changes that are identifiable with the A/D converter.
If the resolution is 10 bits, the analog voltage can be resolved into 2
10
= 1024 steps.
Total error
The deviation between the actual and logic value attributable to offset error, gain error, non-linearity error, and
noise.
Linearity error
The deviation between the actual conversion characteristic of the device and the line linking the zero transition
point (“00 0000 0000”
“00 0000 0001”) and the full scale transition point (“11 1111 1110”
“11 1111 1111”).
Differential linearity error
The deviation of input voltage needed to change the output code by 1 LSB from the theoretical value
Digital output
1111 1111
1111 1110
0000 0001
0000 0000
0000 0010
V
OT
V
NT
V
(N+1)T
V
FST
(1 LSB
×
N + V
OT
)
Analog input
Linearity error
1 LSB =
1022
V
FST
– V
OT
Linearity error =
1 LSB
V
NT
– (1 LSB
×
N + V
OT
)
[LSB]
11
11
00
00
00
1 LSB
V
(N + 1)T
– V
NT
– 1 [LSB]
Differential linearity error =
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