參數(shù)資料
型號(hào): MB90611APF
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁(yè)數(shù): 69/91頁(yè)
文件大小: 1521K
代理商: MB90611APF
MB90610A Series
69
6. A/D Converter Glossary
Resolution
The change in analog voltage that can be recognized by 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 variation from the ideal input voltage required to change the output code by 1 LSB.
Comparator
Analog input
R
ON1
R
ON2
C
1
C
0
R
ON1
=
1.5 k
(approx.) (V
CC
= 5.0 V)
R
ON2
=
0.5 k
(approx.) (V
CC
= 5.0 V)
R
ON3
=
0.5 k
(approx.) (V
CC
= 5.0 V)
R
ON4
=
0.5 k
(approx.) (V
CC
= 5.0 V)
C
0
=
60 pF (approx.)
C
1
=
4 pF (approx.)
R
ON3
R
ON4
Sample and hold circuit
Note: The above values are for reference only.
Model of The Analog Input Circuit
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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