參數(shù)資料
型號: MB90F927S
廠商: Fujitsu Limited
英文描述: 16-bit Microcontrolle
中文描述: 16位Microcontrolle
文件頁數(shù): 58/63頁
文件大?。?/td> 941K
代理商: MB90F927S
MB90925 Series
58
(2) Definition of terms
Resolution :
Analog changes that are identifiable with the A/D converter.
Non-Linear 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 linear error : The deviation of input voltage needed to change the output code by 1 LSB from the
ideal value.
Total error :
The total error is defined as a difference between the actual value and the theoretical value,
which includes zero-transition error/full-scale transition error and linear error.
(Continued)
Total error
Actual conversion
value
Analog input
Total error for digital output N =
V
NT
{1 LSB
×
(N
1)
+
0.5 LSB}
1 LSB
AVRH
AV
SS
1024
[LSB]
1 LSB(Ideal)
=
[V]
V
OT
(Ideal)
=
AVss
+
0.5 LSB [V]
V
FST
(Ideal)
=
AVRH
1.5 LSB [V]
V
NT
: Voltage at a transition of digital output from (N - 1)
H
to N
H
Actual conversion
value
Ideal
characteristics
(Measured value)
D
AV
SS
AVRH
3FF
H
3FE
H
3FD
H
004
H
003
H
002
H
001
H
1.5 LSB
V
{1 LSB x (N - 1) + 0.5 LSB}
0.5 LSB
N : A/D converter digital output value
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