參數(shù)資料
型號(hào): MB2146-302A
廠商: Fujitsu Limited
英文描述: 8-bit Proprietary Microcontrollers
中文描述: 8位微控制器專有
文件頁(yè)數(shù): 60/67頁(yè)
文件大?。?/td> 783K
代理商: MB2146-302A
MB95120 Series
60
(3) Definition of A/D Converter Terms
Resolution
The level of analog variation that can be distinguished by the A/D converter.
When the number of bits is 10, analog voltage can be divided into 2
10
=
1024.
Linearity error (unit : LSB)
The deviation between the value along a straight line connecting the zero transition point
(“00 0000 0000”
“00 0000 0001”) of a device and the full-scale transition point
(“11 1111 1111”
“11 1111 1110”) compared with the actual conversion values obtained.
Differential linear error (Unit : LSB)
Deviation of input voltage, which is required for changing output code by 1 LSB, from an ideal value.
Total error (unit: LSB)
Difference between actual and theoretical values, caused by a zero transition error, full-scale transition error,
linearity error, quantum error, and noise.
(Continued)
V
FST
1.5 LSB
3FF
H
3FE
H
3FD
H
004
H
003
H
002
H
001
H
3FF
H
3FE
H
3FD
H
004
H
003
H
002
H
001
H
1 LSB
0.5 LSB
V
OT
AV
SS
AVR
AV
SS
V
NT
AVR
{1 LSB
×
(
N
1
)
+
0.5 LSB}
1 LSB
=
AVR
AV
SS
1024
(V)
Total error of
digital output N
V
NT
{1 LSB
×
(N
1)
+
0.5 LSB}
1 LSB
Ideal I/O characteristics
Total error
D
Analog input
Analog input
D
[LSB]
Actual conversion
characteristic
Actual conversion
characteristic
Ideal characteristics
N : A/D converter digital output value
V
NT
: A voltage at which digital output transits from (N - 1) to N.
=
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